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Placeholder links (e.g. <a>...</a>) shouldn't be styled as hyperlinks. #19402

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EricDunsworth opened this Issue Mar 4, 2016 · 25 comments

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@EricDunsworth
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EricDunsworth commented Mar 4, 2016

I've noticed that Bootstrap's default CSS currently styles all a elements as hyperlinks (blue text color, underlining on mouse hover, etc...). Wouldn't it make more sense to only style a elements that contain href attributes in that way?

The HTML 5.1 spec's definition of the a element states that only a elements that use href attributes are considered to be hyperlinks. a elements that lack href are classified as placeholder links and are supposed to only consist of that element's content. In other words, by default, placeholder links are meant to look like normal text without any special styling.

From what I can tell, all modern browsers' built-in style sheets render placeholder links as normal text and only add colouring/underlining if an href attribute is used. Bootstrap 3 and 4 are currently overriding that behaviour.

JS Bin examples:

@patrickhlauke

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patrickhlauke commented Mar 4, 2016

agree - though i think as this is potentially a breaking change, i'd target it purely at v4. @mdo @cvrebert? will cook up a PR later tonight...

@patrickhlauke patrickhlauke self-assigned this Mar 4, 2016

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XhmikosR commented Mar 4, 2016

So wait, we can have an a without href? I mean, is it valid?

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EricDunsworth commented Mar 4, 2016

Btw once this is implemented, there could potentially be value in taking it a step further by treating placeholder links in the same way as the disabled class in certain scenarios. Although that would require more markup changes since that class is currently used on li elements (as opposed to a elements).

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patrickhlauke commented Mar 4, 2016

note that href-less <a> elements have traditionally been used as (named, when given an actual name attribute) anchors, so assuming wholesale that these are disabled/placeholder links (regardless of whatwg's new definition) may not always be appropriate

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patrickhlauke commented Mar 4, 2016

started looking at this with a naive tweak to _reboot.scss

a[href] {
  color: $link-color;
  text-decoration: $link-decoration;

  @include hover-focus {
    color: $link-hover-color;
    text-decoration: $link-hover-decoration;
  }

  &:focus {
    @include tab-focus();
  }
}

but it turns out that the additional [href] increases the specificity of that selector too much, and it clashes with lots of other classes (like .btn, .nav-link) which would then require many further specificity bumps. further, this then seems to go against an overall approach of avoiding specific element names in our css selectors.

wondering if the problem is big enough to warrant this? or if it's more straightforward to introduce a new class for placeholder links/named anchors instead?

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mdo commented Mar 5, 2016

We worked through this at GitHub to avoid the shitshow that @patrickhlauke mentioned. Here's how we handle it in our Markdown styles:

  // Anchors like <a name="examples">. These sometimes end up wrapped around
  // text when users mistakenly forget to close the tag or use self-closing tag
  // syntax. We don't want them to appear like links.
  // FIXME: a:not(:link):not(:visited) would be a little clearer here (and
  // possibly faster to match), but it breaks styling of <a href> elements due
  // to https://bugs.webkit.org/show_bug.cgi?id=142737.
  a:not([href]) {
    color: inherit;
    text-decoration: none;
  }
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patrickhlauke commented Mar 5, 2016

@mdo ... the sound you hear is me slapping myself on the forehead. of course not([href])

I'll do a PR in the morning. clearly i need some sleep after chasing my own tail previously with the specificity thing...

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patrickhlauke commented Mar 5, 2016

actually, who needs sleep... #19411

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patrickhlauke commented Mar 6, 2016

closed via #19411

@cvrebert cvrebert added this to the v4.0.0-alpha.3 milestone Mar 6, 2016

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EricDunsworth commented Mar 10, 2016

@patrickhlauke Thanks :)!

Btw regarding this:

note that href-less elements have traditionally been used as (named, when given an actual name attribute) anchors, so assuming wholesale that these are disabled/placeholder links (regardless of whatwg's new definition) may not always be appropriate

FWIW, the HTML5 spec (not just 5.1) also contains the same definition for placeholder links. Also, wouldn't it be highly unlikely for sites that put in the effort to implement Bootstrap 4.0 to still be using named anchors in this day and age?

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abstractic commented May 10, 2016

I honestly think this CSS snippet a:not([href]) {} is a quite bad approach, as it will cause issues with override styling down the line, and the only way to override it, is to specify exactly the same name pattern like a.myclass:not([href]) { [my new color] } and a.myclass:not([href]):hover { [my new color] } or use the horrible bad !important attribute.

I think it's better to remove the HREF attribute on actions that triggers a modal box or something similar, than using something like href="#" or href="javascript:void(0)", which is way worse in a semantically correct perspective. A button would of course be the best solution, but it's not always suitable.

With other words, this snippet causes more issues than good, and if I choose not to use a HREF attribute, I can also make sure that those specific anchors look like I want myself, instead of being forced to make ridiculous overrides of a:not([href]) {}.

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patrickhlauke commented May 10, 2016

follow-up: #19874

EricDunsworth added a commit to EricDunsworth/wet-boew that referenced this issue Sep 9, 2016

Bootstrap overrides: Changed placeholder links to look like plain text.
Also prevented contrast ratio issues in pagination placeholder links that use the "active" class.

Related to twbs/bootstrap#19402 and partially-based on twbs/bootstrap#19411 (thanks @patrickhlauke).
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wlkns commented Sep 15, 2016

As identified by @abstractic, this is causing us issues, we are having to exclude _reboot.scss in our projects to get links/buttons to style correctly as not all of them have [href]. Overwriting the property, or even using a global a selector does not provide a fix.

For us, links are often made using the ui-sref="angular.route" or ng-click="function()" attributes and certainly do not always contain the href attribute.

We have no issue with it being by default un-styled if no link is present, but it should be configurable or improved, as I can fore-see quite a lot of people having similar issues to us.

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patrickhlauke commented Sep 15, 2016

this is causing us issues, we are having to exclude _reboot.scss in our projects to get links/buttons to style correctly as not all of them have [href]

Are there any technical reasons why your projects aren't using actual <button> elements rather than <a ...> anchors?

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wlkns commented Sep 15, 2016

Hi @patrickhlauke, I can see why you made this suggestion and for ng-click actions we do tend to use buttons, but for ui-sref we thought a was best (as its the same as href.) Also, buttons didn't feel correct nested under nav > ul > li items.

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alisd23 commented Sep 19, 2016

Just some thoughts, this inconveniences many React applications I imagine.

react-router <Link /> component renders an a element with no option to override it, and of course doesn't have a href attribute (just click handlers). This would mean anyone using react-router with bootstrap would not be able to use, or would at least have to override the _reboot.scss file.

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mdo commented Sep 20, 2016

So far this is the one of the only issues I can think of that has asked us to revisit this behavior. Given that, plus the higher specificity it introduces at a global level, there are no plans to change this in Bootstrap at this time.

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tigt commented Nov 28, 2016

It's very possible I missed something, but why not :link to select <a> elements with working hrefs? That way it only has the specificity of one "class", which .btn and friends should be able to override.

Small demo: http://codepen.io/tigt/pen/c032fa19010074d7fce6b8ed5de85809?editors=1100

:link {
  color: $link-color;
  text-decoration: $link-decoration;

  @include hover-focus {
    color: $link-hover-color;
    text-decoration: $link-hover-decoration;
  }

  &:focus {
    @include tab-focus();
  }
}
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mdo commented Nov 29, 2016

Hmmm, that's an interesting direction I hadn't thought of @tigt, but we don't want to have to set the visited state in our link styling, too. I know that seems counterintuitive, but we've done it that way for a long time to simplify styles for projects that are more akin to web apps and the like.

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tigt commented Nov 30, 2016

I'm not sure I understand; like changing the above selector to :link, :visited?

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mdo commented Dec 2, 2016

We use a { ... } because it targets both the default and visited states of anchors. With just :link styling the color and more, it'll only apply to non-visited links. Specifically targeting :visited in addition here is a no-go because that theoretically doubles the number of selectors needed to style any other link across our project as we'd need to style both states again and again.

screen shot 2016-12-02 at 9 46 33 am

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tigt commented Dec 2, 2016

Ah, okay, I see. I was under the impression that the only property you would have to override is :visited { color: * }, once, and then links would have :focus and friends take precedence through source order later.

I am a little curious in making the change myself and seeing what shakes out, though. What results should I look for to see if it's worth thinking about? Filesize (pre/post gzip), overall specificity, # of selectors?

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mdo commented Dec 4, 2016

It'd be less about specific file size or lines added (it honestly won't be much I think), and more about the need to document this behavior and require folks using/customize Bootstrap having to do it as well. It's more of a nuisance than anything else.

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tigt commented Dec 5, 2016

Gotcha.

jvanulde added a commit to jvanulde/wet-boew that referenced this issue Dec 29, 2016

Bootstrap overrides: Changed placeholder links to look like plain text.
Also prevented contrast ratio issues in pagination placeholder links that use the "active" class.

Related to twbs/bootstrap#19402 and partially-based on twbs/bootstrap#19411 (thanks @patrickhlauke).

ErikSeguinte added a commit to ErikSeguinte/Zipf that referenced this issue Jan 22, 2018

diff --git a/src/.DS_Store b/src/.DS_Store
deleted file mode 100644
index 8a72164..0000000
Binary files a/src/.DS_Store and /dev/null differ
diff --git a/src/css/bootstrap-reboot.css b/src/css/bootstrap-reboot.css
new file mode 100644
index 0000000..5a75a62
--- /dev/null
+++ b/src/css/bootstrap-reboot.css
@@ -0,0 +1,330 @@
+/*!
+ * Bootstrap Reboot v4.0.0 (https://getbootstrap.com)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
+ */
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+html {
+  font-family: sans-serif;
+  line-height: 1.15;
+  -webkit-text-size-adjust: 100%;
+  -ms-text-size-adjust: 100%;
+  -ms-overflow-style: scrollbar;
+  -webkit-tap-highlight-color: transparent;
+}
+
+@-ms-viewport {
+  width: device-width;
+}
+
+article, aside, dialog, figcaption, figure, footer, header, hgroup, main, nav, section {
+  display: block;
+}
+
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+  font-size: 1rem;
+  font-weight: 400;
+  line-height: 1.5;
+  color: #212529;
+  text-align: left;
+  background-color: #fff;
+}
+
+[tabindex="-1"]:focus {
+  outline: 0 !important;
+}
+
+hr {
+  box-sizing: content-box;
+  height: 0;
+  overflow: visible;
+}
+
+h1, h2, h3, h4, h5, h6 {
+  margin-top: 0;
+  margin-bottom: 0.5rem;
+}
+
+p {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+abbr[title],
+abbr[data-original-title] {
+  text-decoration: underline;
+  -webkit-text-decoration: underline dotted;
+  text-decoration: underline dotted;
+  cursor: help;
+  border-bottom: 0;
+}
+
+address {
+  margin-bottom: 1rem;
+  font-style: normal;
+  line-height: inherit;
+}
+
+ol,
+ul,
+dl {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+ol ol,
+ul ul,
+ol ul,
+ul ol {
+  margin-bottom: 0;
+}
+
+dt {
+  font-weight: 700;
+}
+
+dd {
+  margin-bottom: .5rem;
+  margin-left: 0;
+}
+
+blockquote {
+  margin: 0 0 1rem;
+}
+
+dfn {
+  font-style: italic;
+}
+
+b,
+strong {
+  font-weight: bolder;
+}
+
+small {
+  font-size: 80%;
+}
+
+sub,
+sup {
+  position: relative;
+  font-size: 75%;
+  line-height: 0;
+  vertical-align: baseline;
+}
+
+sub {
+  bottom: -.25em;
+}
+
+sup {
+  top: -.5em;
+}
+
+a {
+  color: #007bff;
+  text-decoration: none;
+  background-color: transparent;
+  -webkit-text-decoration-skip: objects;
+}
+
+a:hover {
+  color: #0056b3;
+  text-decoration: underline;
+}
+
+a:not([href]):not([tabindex]) {
+  color: inherit;
+  text-decoration: none;
+}
+
+a:not([href]):not([tabindex]):hover, a:not([href]):not([tabindex]):focus {
+  color: inherit;
+  text-decoration: none;
+}
+
+a:not([href]):not([tabindex]):focus {
+  outline: 0;
+}
+
+pre,
+code,
+kbd,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em;
+}
+
+pre {
+  margin-top: 0;
+  margin-bottom: 1rem;
+  overflow: auto;
+  -ms-overflow-style: scrollbar;
+}
+
+figure {
+  margin: 0 0 1rem;
+}
+
+img {
+  vertical-align: middle;
+  border-style: none;
+}
+
+svg:not(:root) {
+  overflow: hidden;
+}
+
+table {
+  border-collapse: collapse;
+}
+
+caption {
+  padding-top: 0.75rem;
+  padding-bottom: 0.75rem;
+  color: #6c757d;
+  text-align: left;
+  caption-side: bottom;
+}
+
+th {
+  text-align: inherit;
+}
+
+label {
+  display: inline-block;
+  margin-bottom: .5rem;
+}
+
+button {
+  border-radius: 0;
+}
+
+button:focus {
+  outline: 1px dotted;
+  outline: 5px auto -webkit-focus-ring-color;
+}
+
+input,
+button,
+select,
+optgroup,
+textarea {
+  margin: 0;
+  font-family: inherit;
+  font-size: inherit;
+  line-height: inherit;
+}
+
+button,
+input {
+  overflow: visible;
+}
+
+button,
+select {
+  text-transform: none;
+}
+
+button,
+html [type="button"],
+[type="reset"],
+[type="submit"] {
+  -webkit-appearance: button;
+}
+
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  padding: 0;
+  border-style: none;
+}
+
+input[type="radio"],
+input[type="checkbox"] {
+  box-sizing: border-box;
+  padding: 0;
+}
+
+input[type="date"],
+input[type="time"],
+input[type="datetime-local"],
+input[type="month"] {
+  -webkit-appearance: listbox;
+}
+
+textarea {
+  overflow: auto;
+  resize: vertical;
+}
+
+fieldset {
+  min-width: 0;
+  padding: 0;
+  margin: 0;
+  border: 0;
+}
+
+legend {
+  display: block;
+  width: 100%;
+  max-width: 100%;
+  padding: 0;
+  margin-bottom: .5rem;
+  font-size: 1.5rem;
+  line-height: inherit;
+  color: inherit;
+  white-space: normal;
+}
+
+progress {
+  vertical-align: baseline;
+}
+
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
+  height: auto;
+}
+
+[type="search"] {
+  outline-offset: -2px;
+  -webkit-appearance: none;
+}
+
+[type="search"]::-webkit-search-cancel-button,
+[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+::-webkit-file-upload-button {
+  font: inherit;
+  -webkit-appearance: button;
+}
+
+output {
+  display: inline-block;
+}
+
+summary {
+  display: list-item;
+  cursor: pointer;
+}
+
+template {
+  display: none;
+}
+
+[hidden] {
+  display: none !important;
+}
+/*# sourceMappingURL=bootstrap-reboot.css.map */
\ No newline at end of file
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new file mode 100644
index 0000000..3f18406
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Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.\n// 2. Change the default font family in all browsers.\n// 3. Correct the line height in all browsers.\n// 4. Prevent adjustments of font size after orientation changes in IE on Windows Phone and in iOS.\n// 5. Setting @viewport causes scrollbars to overlap content in IE11 and Edge, so\n//    we force a non-overlapping, non-auto-hiding scrollbar to counteract.\n// 6. Change the default tap highlight to be completely transparent in iOS.\n\n*,\n*::before,\n*::after {\n  box-sizing: border-box; // 1\n}\n\nhtml {\n  font-family: sans-serif; // 2\n  line-height: 1.15; // 3\n  -webkit-text-size-adjust: 100%; // 4\n  -ms-text-size-adjust: 100%; // 4\n  -ms-overflow-style: scrollbar; // 5\n  -webkit-tap-highlight-color: rgba(0, 0, 0, 0); // 6\n}\n\n// IE10+ doesn't honor `<meta name=\"viewport\">` in some cases.\n@at-root {\n  @-ms-viewport {\n    width: device-width;\n  }\n}\n\n// stylelint-disable selector-list-comma-newline-after\n// Shim for \"new\" HTML5 structural elements to display correctly (IE10, older browsers)\narticle, aside, dialog, figcaption, figure, footer, header, hgroup, main, nav, section {\n  display: block;\n}\n// stylelint-enable selector-list-comma-newline-after\n\n// Body\n//\n// 1. Remove the margin in all browsers.\n// 2. As a best practice, apply a default `background-color`.\n// 3. Set an explicit initial text-align value so that we can later use the\n//    the `inherit` value on things like `<th>` elements.\n\nbody {\n  margin: 0; // 1\n  font-family: $font-family-base;\n  font-size: $font-size-base;\n  font-weight: $font-weight-base;\n  line-height: $line-height-base;\n  color: $body-color;\n  text-align: left; // 3\n  background-color: $body-bg; // 2\n}\n\n// Suppress the focus outline on elements that cannot be accessed via keyboard.\n// This prevents an unwanted focus outline from appearing around elements that\n// might still respond to pointer events.\n//\n// Credit: https://github.com/suitcss/base\n[tabindex=\"-1\"]:focus {\n  outline: 0 !important;\n}\n\n\n// Content grouping\n//\n// 1. Add the correct box sizing in Firefox.\n// 2. Show the overflow in Edge and IE.\n\nhr {\n  box-sizing: content-box; // 1\n  height: 0; // 1\n  overflow: visible; // 2\n}\n\n\n//\n// Typography\n//\n\n// Remove top margins from headings\n//\n// By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top\n// margin for easier control within type scales as it avoids margin collapsing.\n// stylelint-disable selector-list-comma-newline-after\nh1, h2, h3, h4, h5, h6 {\n  margin-top: 0;\n  margin-bottom: $headings-margin-bottom;\n}\n// stylelint-enable selector-list-comma-newline-after\n\n// Reset margins on paragraphs\n//\n// Similarly, the top margin on `<p>`s get reset. However, we also reset the\n// bottom margin to use `rem` units instead of `em`.\np {\n  margin-top: 0;\n  margin-bottom: $paragraph-margin-bottom;\n}\n\n// Abbreviations\n//\n// 1. Remove the bottom border in Firefox 39-.\n// 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.\n// 3. Add explicit cursor to indicate changed behavior.\n// 4. Duplicate behavior to the data-* attribute for our tooltip plugin\n\nabbr[title],\nabbr[data-original-title] { // 4\n  text-decoration: underline; // 2\n  text-decoration: underline dotted; // 2\n  cursor: help; // 3\n  border-bottom: 0; // 1\n}\n\naddress {\n  margin-bottom: 1rem;\n  font-style: normal;\n  line-height: inherit;\n}\n\nol,\nul,\ndl {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nol ol,\nul ul,\nol ul,\nul ol {\n  margin-bottom: 0;\n}\n\ndt {\n  font-weight: $dt-font-weight;\n}\n\ndd {\n  margin-bottom: .5rem;\n  margin-left: 0; // Undo browser default\n}\n\nblockquote {\n  margin: 0 0 1rem;\n}\n\ndfn {\n  font-style: italic; // Add the correct font style in Android 4.3-\n}\n\n// stylelint-disable font-weight-notation\nb,\nstrong {\n  font-weight: bolder; // Add the correct font weight in Chrome, Edge, and Safari\n}\n// stylelint-enable font-weight-notation\n\nsmall {\n  font-size: 80%; // Add the correct font size in all browsers\n}\n\n//\n// Prevent `sub` and `sup` elements from affecting the line height in\n// all browsers.\n//\n\nsub,\nsup {\n  position: relative;\n  font-size: 75%;\n  line-height: 0;\n  vertical-align: baseline;\n}\n\nsub { bottom: -.25em; }\nsup { top: -.5em; }\n\n\n//\n// Links\n//\n\na {\n  color: $link-color;\n  text-decoration: $link-decoration;\n  background-color: transparent; // Remove the gray background on active links in IE 10.\n  -webkit-text-decoration-skip: objects; // Remove gaps in links underline in iOS 8+ and Safari 8+.\n\n  @include hover {\n    color: $link-hover-color;\n    text-decoration: $link-hover-decoration;\n  }\n}\n\n// And undo these styles for placeholder links/named anchors (without href)\n// which have not been made explicitly keyboard-focusable (without tabindex).\n// It would be more straightforward to just use a[href] in previous block, but that\n// causes specificity issues in many other styles that are too complex to fix.\n// See https://github.com/twbs/bootstrap/issues/19402\n\na:not([href]):not([tabindex]) {\n  color: inherit;\n  text-decoration: none;\n\n  @include hover-focus {\n    color: inherit;\n    text-decoration: none;\n  }\n\n  &:focus {\n    outline: 0;\n  }\n}\n\n\n//\n// Code\n//\n\n// stylelint-disable font-family-no-duplicate-names\npre,\ncode,\nkbd,\nsamp {\n  font-family: monospace, monospace; // Correct the inheritance and scaling of font size in all browsers.\n  font-size: 1em; // Correct the odd `em` font sizing in all browsers.\n}\n// stylelint-enable font-family-no-duplicate-names\n\npre {\n  // Remove browser default top margin\n  margin-top: 0;\n  // Reset browser default of `1em` to use `rem`s\n  margin-bottom: 1rem;\n  // Don't allow content to break outside\n  overflow: auto;\n  // We have @viewport set which causes scrollbars to overlap content in IE11 and Edge, so\n  // we force a non-overlapping, non-auto-hiding scrollbar to counteract.\n  -ms-overflow-style: scrollbar;\n}\n\n\n//\n// Figures\n//\n\nfigure {\n  // Apply a consistent margin strategy (matches our type styles).\n  margin: 0 0 1rem;\n}\n\n\n//\n// Images and content\n//\n\nimg {\n  vertical-align: middle;\n  border-style: none; // Remove the border on images inside links in IE 10-.\n}\n\nsvg:not(:root) {\n  overflow: hidden; // Hide the overflow in IE\n}\n\n\n//\n// Tables\n//\n\ntable {\n  border-collapse: collapse; // Prevent double borders\n}\n\ncaption {\n  padding-top: $table-cell-padding;\n  padding-bottom: $table-cell-padding;\n  color: $text-muted;\n  text-align: left;\n  caption-side: bottom;\n}\n\nth {\n  // Matches default `<td>` alignment by inheriting from the `<body>`, or the\n  // closest parent with a set `text-align`.\n  text-align: inherit;\n}\n\n\n//\n// Forms\n//\n\nlabel {\n  // Allow labels to use `margin` for spacing.\n  display: inline-block;\n  margin-bottom: .5rem;\n}\n\n// Remove the default `border-radius` that macOS Chrome adds.\n//\n// Details at https://github.com/twbs/bootstrap/issues/24093\nbutton {\n  border-radius: 0;\n}\n\n// Work around a Firefox/IE bug where the transparent `button` background\n// results in a loss of the default `button` focus styles.\n//\n// Credit: https://github.com/suitcss/base/\nbutton:focus {\n  outline: 1px dotted;\n  outline: 5px auto -webkit-focus-ring-color;\n}\n\ninput,\nbutton,\nselect,\noptgroup,\ntextarea {\n  margin: 0; // Remove the margin in Firefox and Safari\n  font-family: inherit;\n  font-size: inherit;\n  line-height: inherit;\n}\n\nbutton,\ninput {\n  overflow: visible; // Show the overflow in Edge\n}\n\nbutton,\nselect {\n  text-transform: none; // Remove the inheritance of text transform in Firefox\n}\n\n// 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`\n//    controls in Android 4.\n// 2. Correct the inability to style clickable types in iOS and Safari.\nbutton,\nhtml [type=\"button\"], // 1\n[type=\"reset\"],\n[type=\"submit\"] {\n  -webkit-appearance: button; // 2\n}\n\n// Remove inner border and padding from Firefox, but don't restore the outline like Normalize.\nbutton::-moz-focus-inner,\n[type=\"button\"]::-moz-focus-inner,\n[type=\"reset\"]::-moz-focus-inner,\n[type=\"submit\"]::-moz-focus-inner {\n  padding: 0;\n  border-style: none;\n}\n\ninput[type=\"radio\"],\ninput[type=\"checkbox\"] {\n  box-sizing: border-box; // 1. Add the correct box sizing in IE 10-\n  padding: 0; // 2. Remove the padding in IE 10-\n}\n\n\ninput[type=\"date\"],\ninput[type=\"time\"],\ninput[type=\"datetime-local\"],\ninput[type=\"month\"] {\n  // Remove the default appearance of temporal inputs to avoid a Mobile Safari\n  // bug where setting a custom line-height prevents text from being vertically\n  // centered within the input.\n  // See https://bugs.webkit.org/show_bug.cgi?id=139848\n  // and https://github.com/twbs/bootstrap/issues/11266\n  -webkit-appearance: listbox;\n}\n\ntextarea {\n  overflow: auto; // Remove the default vertical scrollbar in IE.\n  // Textareas should really only resize vertically so they don't break their (horizontal) containers.\n  resize: vertical;\n}\n\nfieldset {\n  // Browsers set a default `min-width: min-content;` on fieldsets,\n  // unlike e.g. `<div>`s, which have `min-width: 0;` by default.\n  // So we reset that to ensure fieldsets behave more like a standard block element.\n  // See https://github.com/twbs/bootstrap/issues/12359\n  // and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements\n  min-width: 0;\n  // Reset the default outline behavior of fieldsets so they don't affect page layout.\n  padding: 0;\n  margin: 0;\n  border: 0;\n}\n\n// 1. Correct the text wrapping in Edge and IE.\n// 2. Correct the color inheritance from `fieldset` elements in IE.\nlegend {\n  display: block;\n  width: 100%;\n  max-width: 100%; // 1\n  padding: 0;\n  margin-bottom: .5rem;\n  font-size: 1.5rem;\n  line-height: inherit;\n  color: inherit; // 2\n  white-space: normal; // 1\n}\n\nprogress {\n  vertical-align: baseline; // Add the correct vertical alignment in Chrome, Firefox, and Opera.\n}\n\n// Correct the cursor style of increment and decrement buttons in Chrome.\n[type=\"number\"]::-webkit-inner-spin-button,\n[type=\"number\"]::-webkit-outer-spin-button {\n  height: auto;\n}\n\n[type=\"search\"] {\n  // This overrides the extra rounded corners on search inputs in iOS so that our\n  // `.form-control` class can properly style them. Note that this cannot simply\n  // be added to `.form-control` as it's not specific enough. For details, see\n  // https://github.com/twbs/bootstrap/issues/11586.\n  outline-offset: -2px; // 2. Correct the outline style in Safari.\n  -webkit-appearance: none;\n}\n\n//\n// Remove the inner padding and cancel buttons in Chrome and Safari on macOS.\n//\n\n[type=\"search\"]::-webkit-search-cancel-button,\n[type=\"search\"]::-webkit-search-decoration {\n  -webkit-appearance: none;\n}\n\n//\n// 1. Correct the inability to style clickable types in iOS and Safari.\n// 2. Change font properties to `inherit` in Safari.\n//\n\n::-webkit-file-upload-button {\n  font: inherit; // 2\n  -webkit-appearance: button; // 1\n}\n\n//\n// Correct element displays\n//\n\noutput {\n  display: inline-block;\n}\n\nsummary {\n  display: list-item; // Add the correct display in all browsers\n  cursor: pointer;\n}\n\ntemplate {\n  display: none; // Add the correct display in IE\n}\n\n// Always hide an element with the `hidden` HTML attribute (from PureCSS).\n// Needed for proper display in IE 10-.\n[hidden] {\n  display: none !important;\n}\n","/*!\n * Bootstrap Reboot v4.0.0 (https://getbootstrap.com)\n * Copyright 2011-2018 The Bootstrap Authors\n * Copyright 2011-2018 Twitter, Inc.\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)\n */\n*,\n*::before,\n*::after {\n  box-sizing: border-box;\n}\n\nhtml {\n  font-family: sans-serif;\n  line-height: 1.15;\n  -webkit-text-size-adjust: 100%;\n  -ms-text-size-adjust: 100%;\n  -ms-overflow-style: scrollbar;\n  -webkit-tap-highlight-color: transparent;\n}\n\n@-ms-viewport {\n  width: device-width;\n}\n\narticle, aside, dialog, figcaption, figure, footer, header, hgroup, main, nav, section {\n  display: block;\n}\n\nbody {\n  margin: 0;\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\";\n  font-size: 1rem;\n  font-weight: 400;\n  line-height: 1.5;\n  color: #212529;\n  text-align: left;\n  background-color: #fff;\n}\n\n[tabindex=\"-1\"]:focus {\n  outline: 0 !important;\n}\n\nhr {\n  box-sizing: content-box;\n  height: 0;\n  overflow: visible;\n}\n\nh1, h2, h3, h4, h5, h6 {\n  margin-top: 0;\n  margin-bottom: 0.5rem;\n}\n\np {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nabbr[title],\nabbr[data-original-title] {\n  text-decoration: underline;\n  text-decoration: underline dotted;\n  cursor: help;\n  border-bottom: 0;\n}\n\naddress {\n  margin-bottom: 1rem;\n  font-style: normal;\n  line-height: inherit;\n}\n\nol,\nul,\ndl {\n  margin-top: 0;\n  margin-bottom: 1rem;\n}\n\nol ol,\nul ul,\nol ul,\nul ol {\n  margin-bottom: 0;\n}\n\ndt {\n  font-weight: 700;\n}\n\ndd {\n  margin-bottom: .5rem;\n  margin-left: 0;\n}\n\nblockquote {\n  margin: 0 0 1rem;\n}\n\ndfn {\n  font-style: italic;\n}\n\nb,\nstrong {\n  font-weight: bolder;\n}\n\nsmall {\n  font-size: 80%;\n}\n\nsub,\nsup {\n  position: relative;\n  font-size: 75%;\n  line-height: 0;\n  vertical-align: baseline;\n}\n\nsub {\n  bottom: -.25em;\n}\n\nsup {\n  top: -.5em;\n}\n\na {\n  color: #007bff;\n  text-decoration: none;\n  background-color: transparent;\n  -webkit-text-decoration-skip: objects;\n}\n\na:hover {\n  color: #0056b3;\n  text-decoration: underline;\n}\n\na:not([href]):not([tabindex]) {\n  color: inherit;\n  text-decoration: none;\n}\n\na:not([href]):not([tabindex]):hover, a:not([href]):not([tabindex]):focus {\n  color: inherit;\n  text-decoration: none;\n}\n\na:not([href]):not([tabindex]):focus {\n  outline: 0;\n}\n\npre,\ncode,\nkbd,\nsamp {\n  font-family: monospace, monospace;\n  font-size: 1em;\n}\n\npre {\n  margin-top: 0;\n  margin-bottom: 1rem;\n  overflow: auto;\n  -ms-overflow-style: scrollbar;\n}\n\nfigure {\n  margin: 0 0 1rem;\n}\n\nimg {\n  vertical-align: middle;\n  border-style: none;\n}\n\nsvg:not(:root) {\n  overflow: hidden;\n}\n\ntable {\n  border-collapse: collapse;\n}\n\ncaption {\n  padding-top: 0.75rem;\n  padding-bottom: 0.75rem;\n  color: #6c757d;\n  text-align: left;\n  caption-side: bottom;\n}\n\nth {\n  text-align: inherit;\n}\n\nlabel {\n  display: inline-block;\n  margin-bottom: .5rem;\n}\n\nbutton {\n  border-radius: 0;\n}\n\nbutton:focus {\n  outline: 1px dotted;\n  outline: 5px auto -webkit-focus-ring-color;\n}\n\ninput,\nbutton,\nselect,\noptgroup,\ntextarea {\n  margin: 0;\n  font-family: inherit;\n  font-size: inherit;\n  line-height: inherit;\n}\n\nbutton,\ninput {\n  overflow: visible;\n}\n\nbutton,\nselect {\n  text-transform: none;\n}\n\nbutton,\nhtml [type=\"button\"],\n[type=\"reset\"],\n[type=\"submit\"] {\n  -webkit-appearance: button;\n}\n\nbutton::-moz-focus-inner,\n[type=\"button\"]::-moz-focus-inner,\n[type=\"reset\"]::-moz-focus-inner,\n[type=\"submit\"]::-moz-focus-inner {\n  padding: 0;\n  border-style: none;\n}\n\ninput[type=\"radio\"],\ninput[type=\"checkbox\"] {\n  box-sizing: border-box;\n  padding: 0;\n}\n\ninput[type=\"date\"],\ninput[type=\"time\"],\ninput[type=\"datetime-local\"],\ninput[type=\"month\"] {\n  -webkit-appearance: listbox;\n}\n\ntextarea {\n  overflow: auto;\n  resize: vertical;\n}\n\nfieldset {\n  min-width: 0;\n  padding: 0;\n  margin: 0;\n  border: 0;\n}\n\nlegend {\n  display: block;\n  width: 100%;\n  max-width: 100%;\n  padding: 0;\n  margin-bottom: .5rem;\n  font-size: 1.5rem;\n  line-height: inherit;\n  color: inherit;\n  white-space: normal;\n}\n\nprogress {\n  vertical-align: baseline;\n}\n\n[type=\"number\"]::-webkit-inner-spin-button,\n[type=\"number\"]::-webkit-outer-spin-button {\n  height: auto;\n}\n\n[type=\"search\"] {\n  outline-offset: -2px;\n  -webkit-appearance: none;\n}\n\n[type=\"search\"]::-webkit-search-cancel-button,\n[type=\"search\"]::-webkit-search-decoration {\n  -webkit-appearance: none;\n}\n\n::-webkit-file-upload-button {\n  font: inherit;\n  -webkit-appearance: button;\n}\n\noutput {\n  display: inline-block;\n}\n\nsummary {\n  display: list-item;\n  cursor: pointer;\n}\n\ntemplate {\n  display: none;\n}\n\n[hidden] {\n  display: none !important;\n}\n\n/*# sourceMappingURL=bootstrap-reboot.css.map */","// Variables\n//\n// Variables should follow the `$component-state-property-size` formula for\n// consistent naming. Ex: $nav-link-disabled-color and $modal-content-box-shadow-xs.\n\n\n//\n// Color system\n//\n\n// stylelint-disable\n$white:    #fff !default;\n$gray-100: #f8f9fa !default;\n$gray-200: #e9ecef !default;\n$gray-300: #dee2e6 !default;\n$gray-400: #ced4da !default;\n$gray-500: #adb5bd !default;\n$gray-600: #6c757d !default;\n$gray-700: #495057 !default;\n$gray-800: #343a40 !default;\n$gray-900: #212529 !default;\n$black:    #000 !default;\n\n$grays: () !default;\n$grays: map-merge((\n  \"100\": $gray-100,\n  \"200\": $gray-200,\n  \"300\": $gray-300,\n  \"400\": $gray-400,\n  \"500\": $gray-500,\n  \"600\": $gray-600,\n  \"700\": $gray-700,\n  \"800\": $gray-800,\n  \"900\": $gray-900\n), $grays);\n\n$blue:    #007bff !default;\n$indigo:  #6610f2 !default;\n$purple:  #6f42c1 !default;\n$pink:    #e83e8c !default;\n$red:     #dc3545 !default;\n$orange:  #fd7e14 !default;\n$yellow:  #ffc107 !default;\n$green:   #28a745 !default;\n$teal:    #20c997 !default;\n$cyan:    #17a2b8 !default;\n\n$colors: () !default;\n$colors: map-merge((\n  \"blue\":       $blue,\n  \"indigo\":     $indigo,\n  \"purple\":     $purple,\n  \"pink\":       $pink,\n  \"red\":        $red,\n  \"orange\":     $orange,\n  \"yellow\":     $yellow,\n  \"green\":      $green,\n  \"teal\":       $teal,\n  \"cyan\":       $cyan,\n  \"white\":      $white,\n  \"gray\":       $gray-600,\n  \"gray-dark\":  $gray-800\n), $colors);\n\n$primary:       $blue !default;\n$secondary:     $gray-600 !default;\n$success:       $green !default;\n$info:          $cyan !default;\n$warning:       $yellow !default;\n$danger:        $red !default;\n$light:         $gray-100 !default;\n$dark:          $gray-800 !default;\n\n$theme-colors: () !default;\n$theme-colors: map-merge((\n  \"primary\":    $primary,\n  \"secondary\":  $secondary,\n  \"success\":    $success,\n  \"info\":       $info,\n  \"warning\":    $warning,\n  \"danger\":     $danger,\n  \"light\":      $light,\n  \"dark\":       $dark\n), $theme-colors);\n// stylelint-enable\n\n// Set a specific jump point for requesting color jumps\n$theme-color-interval:      8% !default;\n\n// The yiq lightness value that determines when the lightness of color changes from \"dark\" to \"light\". Acceptable values are between 0 and 255.\n$yiq-contrasted-threshold: 150 !default;\n\n// Customize the light and dark text colors for use in our YIQ color contrast function.\n$yiq-text-dark: $gray-900 !default;\n$yiq-text-light: $white !default;\n\n// Options\n//\n// Quickly modify global styling by enabling or disabling optional features.\n\n$enable-caret:              true !default;\n$enable-rounded:            true !default;\n$enable-shadows:            false !default;\n$enable-gradients:          false !default;\n$enable-transitions:        true !default;\n$enable-hover-media-query:  false !default; // Deprecated, no longer affects any compiled CSS\n$enable-grid-classes:       true !default;\n$enable-print-styles:       true !default;\n\n\n// Spacing\n//\n// Control the default styling of most Bootstrap elements by modifying these\n// variables. Mostly focused on spacing.\n// You can add more entries to the $spacers map, should you need more variation.\n\n// stylelint-disable\n$spacer: 1rem !default;\n$spacers: () !default;\n$spacers: map-merge((\n  0: 0,\n  1: ($spacer * .25),\n  2: ($spacer * .5),\n  3: $spacer,\n  4: ($spacer * 1.5),\n  5: ($spacer * 3)\n), $spacers);\n\n// This variable affects the `.h-*` and `.w-*` classes.\n$sizes: () !default;\n$sizes: map-merge((\n  25: 25%,\n  50: 50%,\n  75: 75%,\n  100: 100%\n), $sizes);\n// stylelint-enable\n\n// Body\n//\n// Settings for the `<body>` element.\n\n$body-bg:                   $white !default;\n$body-color:                $gray-900 !default;\n\n// Links\n//\n// Style anchor elements.\n\n$link-color:                theme-color(\"primary\") !default;\n$link-decoration:           none !default;\n$link-hover-color:          darken($link-color, 15%) !default;\n$link-hover-decoration:     underline !default;\n\n// Paragraphs\n//\n// Style p element.\n\n$paragraph-margin-bottom:   1rem !default;\n\n\n// Grid breakpoints\n//\n// Define the minimum dimensions at which your layout will change,\n// adapting to different screen sizes, for use in media queries.\n\n$grid-breakpoints: (\n  xs: 0,\n  sm: 576px,\n  md: 768px,\n  lg: 992px,\n  xl: 1200px\n) !default;\n\n@include _assert-ascending($grid-breakpoints, \"$grid-breakpoints\");\n@include _assert-starts-at-zero($grid-breakpoints);\n\n\n// Grid containers\n//\n// Define the maximum width of `.container` for different screen sizes.\n\n$container-max-widths: (\n  sm: 540px,\n  md: 720px,\n  lg: 960px,\n  xl: 1140px\n) !default;\n\n@include _assert-ascending($container-max-widths, \"$container-max-widths\");\n\n\n// Grid columns\n//\n// Set the number of columns and specify the width of the gutters.\n\n$grid-columns:                12 !default;\n$grid-gutter-width:           30px !default;\n\n// Components\n//\n// Define common padding and border radius sizes and more.\n\n$line-height-lg:              1.5 !default;\n$line-height-sm:              1.5 !default;\n\n$border-width:                1px !default;\n$border-color:                $gray-300 !default;\n\n$border-radius:               .25rem !default;\n$border-radius-lg:            .3rem !default;\n$border-radius-sm:            .2rem !default;\n\n$component-active-color:      $white !default;\n$component-active-bg:         theme-color(\"primary\") !default;\n\n$caret-width:                 .3em !default;\n\n$transition-base:             all .2s ease-in-out !default;\n$transition-fade:             opacity .15s linear !default;\n$transition-collapse:         height .35s ease !default;\n\n\n// Fonts\n//\n// Font, line-height, and color for body text, headings, and more.\n\n// stylelint-disable value-keyword-case\n$font-family-sans-serif:      -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, \"Helvetica Neue\", Arial, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\" !default;\n$font-family-monospace:       SFMono-Regular, Menlo, Monaco, Consolas, \"Liberation Mono\", \"Courier New\", monospace !default;\n$font-family-base:            $font-family-sans-serif !default;\n// stylelint-enable value-keyword-case\n\n$font-size-base:              1rem !default; // Assumes the browser default, typically `16px`\n$font-size-lg:                ($font-size-base * 1.25) !default;\n$font-size-sm:                ($font-size-base * .875) !default;\n\n$font-weight-light:           300 !default;\n$font-weight-normal:          400 !default;\n$font-weight-bold:            700 !default;\n\n$font-weight-base:            $font-weight-normal !default;\n$line-height-base:            1.5 !default;\n\n$h1-font-size:                $font-size-base * 2.5 !default;\n$h2-font-size:                $font-size-base * 2 !default;\n$h3-font-size:                $font-size-base * 1.75 !default;\n$h4-font-size:                $font-size-base * 1.5 !default;\n$h5-font-size:                $font-size-base * 1.25 !default;\n$h6-font-size:                $font-size-base !default;\n\n$headings-margin-bottom:      ($spacer / 2) !default;\n$headings-font-family:        inherit !default;\n$headings-font-weight:        500 !default;\n$headings-line-height:        1.2 !default;\n$headings-color:              inherit !default;\n\n$display1-size:               6rem !default;\n$display2-size:               5.5rem !default;\n$display3-size:               4.5rem !default;\n$display4-size:               3.5rem !default;\n\n$display1-weight:             300 !default;\n$display2-weight:             300 !default;\n$display3-weight:             300 !default;\n$display4-weight:             300 !default;\n$display-line-height:         $headings-line-height !default;\n\n$lead-font-size:              ($font-size-base * 1.25) !default;\n$lead-font-weight:            300 !default;\n\n$small-font-size:             80% !default;\n\n$text-muted:                  $gray-600 !default;\n\n$blockquote-small-color:      $gray-600 !default;\n$blockquote-font-size:        ($font-size-base * 1.25) !default;\n\n$hr-border-color:             rgba($black, .1) !default;\n$hr-border-width:             $border-width !default;\n\n$mark-padding:                .2em !default;\n\n$dt-font-weight:              $font-weight-bold !default;\n\n$kbd-box-shadow:              inset 0 -.1rem 0 rgba($black, .25) !default;\n$nested-kbd-font-weight:      $font-weight-bold !default;\n\n$list-inline-padding:         .5rem !default;\n\n$mark-bg:                     #fcf8e3 !default;\n\n$hr-margin-y:                 $spacer !default;\n\n\n// Tables\n//\n// Customizes the `.table` component with basic values, each used across all table variations.\n\n$table-cell-padding:          .75rem !default;\n$table-cell-padding-sm:       .3rem !default;\n\n$table-bg:                    transparent !default;\n$table-accent-bg:             rgba($black, .05) !default;\n$table-hover-bg:              rgba($black, .075) !default;\n$table-active-bg:             $table-hover-bg !default;\n\n$table-border-width:          $border-width !default;\n$table-border-color:          $gray-300 !default;\n\n$table-head-bg:               $gray-200 !default;\n$table-head-color:            $gray-700 !default;\n\n$table-dark-bg:               $gray-900 !default;\n$table-dark-accent-bg:        rgba($white, .05) !default;\n$table-dark-hover-bg:         rgba($white, .075) !default;\n$table-dark-border-color:     lighten($gray-900, 7.5%) !default;\n$table-dark-color:            $body-bg !default;\n\n\n// Buttons + Forms\n//\n// Shared variables that are reassigned to `$input-` and `$btn-` specific variables.\n\n$input-btn-padding-y:         .375rem !default;\n$input-btn-padding-x:         .75rem !default;\n$input-btn-line-height:       $line-height-base !default;\n\n$input-btn-focus-width:       .2rem !default;\n$input-btn-focus-color:       rgba($component-active-bg, .25) !default;\n$input-btn-focus-box-shadow:  0 0 0 $input-btn-focus-width $input-btn-focus-color !default;\n\n$input-btn-padding-y-sm:      .25rem !default;\n$input-btn-padding-x-sm:      .5rem !default;\n$input-btn-line-height-sm:    $line-height-sm !default;\n\n$input-btn-padding-y-lg:      .5rem !default;\n$input-btn-padding-x-lg:      1rem !default;\n$input-btn-line-height-lg:    $line-height-lg !default;\n\n$input-btn-border-width:      $border-width !default;\n\n\n// Buttons\n//\n// For each of Bootstrap's buttons, define text, background, and border color.\n\n$btn-padding-y:               $input-btn-padding-y !default;\n$btn-padding-x:               $input-btn-padding-x !default;\n$btn-line-height:             $input-btn-line-height !default;\n\n$btn-padding-y-sm:            $input-btn-padding-y-sm !default;\n$btn-padding-x-sm:            $input-btn-padding-x-sm !default;\n$btn-line-height-sm:          $input-btn-line-height-sm !default;\n\n$btn-padding-y-lg:            $input-btn-padding-y-lg !default;\n$btn-padding-x-lg:            $input-btn-padding-x-lg !default;\n$btn-line-height-lg:          $input-btn-line-height-lg !default;\n\n$btn-border-width:            $input-btn-border-width !default;\n\n$btn-font-weight:             $font-weight-normal !default;\n$btn-box-shadow:              inset 0 1px 0 rgba($white, .15), 0 1px 1px rgba($black, .075) !default;\n$btn-focus-width:             $input-btn-focus-width !default;\n$btn-focus-box-shadow:        $input-btn-focus-box-shadow !default;\n$btn-disabled-opacity:        .65 !default;\n$btn-active-box-shadow:       inset 0 3px 5px rgba($black, .125) !default;\n\n$btn-link-disabled-color:     $gray-600 !default;\n\n$btn-block-spacing-y:         .5rem !default;\n\n// Allows for customizing button radius independently from global border radius\n$btn-border-radius:           $border-radius !default;\n$btn-border-radius-lg:        $border-radius-lg !default;\n$btn-border-radius-sm:        $border-radius-sm !default;\n\n$btn-transition:              color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;\n\n\n// Forms\n\n$input-padding-y:                       $input-btn-padding-y !default;\n$input-padding-x:                       $input-btn-padding-x !default;\n$input-line-height:                     $input-btn-line-height !default;\n\n$input-padding-y-sm:                    $input-btn-padding-y-sm !default;\n$input-padding-x-sm:                    $input-btn-padding-x-sm !default;\n$input-line-height-sm:                  $input-btn-line-height-sm !default;\n\n$input-padding-y-lg:                    $input-btn-padding-y-lg !default;\n$input-padding-x-lg:                    $input-btn-padding-x-lg !default;\n$input-line-height-lg:                  $input-btn-line-height-lg !default;\n\n$input-bg:                              $white !default;\n$input-disabled-bg:                     $gray-200 !default;\n\n$input-color:                           $gray-700 !default;\n$input-border-color:                    $gray-400 !default;\n$input-border-width:                    $input-btn-border-width !default;\n$input-box-shadow:                      inset 0 1px 1px rgba($black, .075) !default;\n\n$input-border-radius:                   $border-radius !default;\n$input-border-radius-lg:                $border-radius-lg !default;\n$input-border-radius-sm:                $border-radius-sm !default;\n\n$input-focus-bg:                        $input-bg !default;\n$input-focus-border-color:              lighten($component-active-bg, 25%) !default;\n$input-focus-color:                     $input-color !default;\n$input-focus-width:                     $input-btn-focus-width !default;\n$input-focus-box-shadow:                $input-btn-focus-box-shadow !default;\n\n$input-placeholder-color:               $gray-600 !default;\n\n$input-height-border:                   $input-border-width * 2 !default;\n\n$input-height-inner:                    ($font-size-base * $input-btn-line-height) + ($input-btn-padding-y * 2) !default;\n$input-height:                          calc(#{$input-height-inner} + #{$input-height-border}) !default;\n\n$input-height-inner-sm:                 ($font-size-sm * $input-btn-line-height-sm) + ($input-btn-padding-y-sm * 2) !default;\n$input-height-sm:                       calc(#{$input-height-inner-sm} + #{$input-height-border}) !default;\n\n$input-height-inner-lg:                 ($font-size-lg * $input-btn-line-height-lg) + ($input-btn-padding-y-lg * 2) !default;\n$input-height-lg:                       calc(#{$input-height-inner-lg} + #{$input-height-border}) !default;\n\n$input-transition:                      border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;\n\n$form-text-margin-top:                  .25rem !default;\n\n$form-check-input-gutter:               1.25rem !default;\n$form-check-input-margin-y:             .3rem !default;\n$form-check-input-margin-x:             .25rem !default;\n\n$form-check-inline-margin-x:            .75rem !default;\n$form-check-inline-input-margin-x:      .3125rem !default;\n\n$form-group-margin-bottom:              1rem !default;\n\n$input-group-addon-color:               $input-color !default;\n$input-group-addon-bg:                  $gray-200 !default;\n$input-group-addon-border-color:        $input-border-color !default;\n\n$custom-control-gutter:                 1.5rem !default;\n$custom-control-spacer-x:               1rem !default;\n\n$custom-control-indicator-size:         1rem !default;\n$custom-control-indicator-bg:           $gray-300 !default;\n$custom-control-indicator-bg-size:      50% 50% !default;\n$custom-control-indicator-box-shadow:   inset 0 .25rem .25rem rgba($black, .1) !default;\n\n$custom-control-indicator-disabled-bg:          $gray-200 !default;\n$custom-control-label-disabled-color:     $gray-600 !default;\n\n$custom-control-indicator-checked-color:        $component-active-color !default;\n$custom-control-indicator-checked-bg:           $component-active-bg !default;\n$custom-control-indicator-checked-disabled-bg:  rgba(theme-color(\"primary\"), .5) !default;\n$custom-control-indicator-checked-box-shadow:   none !default;\n\n$custom-control-indicator-focus-box-shadow:     0 0 0 1px $body-bg, $input-btn-focus-box-shadow !default;\n\n$custom-control-indicator-active-color:         $component-active-color !default;\n$custom-control-indicator-active-bg:            lighten($component-active-bg, 35%) !default;\n$custom-control-indicator-active-box-shadow:    none !default;\n\n$custom-checkbox-indicator-border-radius:       $border-radius !default;\n$custom-checkbox-indicator-icon-checked:        str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3E%3Cpath fill='#{$custom-control-indicator-checked-color}' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26 2.974 7.25 8 2.193z'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n\n$custom-checkbox-indicator-indeterminate-bg:    $component-active-bg !default;\n$custom-checkbox-indicator-indeterminate-color: $custom-control-indicator-checked-color !default;\n$custom-checkbox-indicator-icon-indeterminate:  str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4'%3E%3Cpath stroke='#{$custom-checkbox-indicator-indeterminate-color}' d='M0 2h4'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n$custom-checkbox-indicator-indeterminate-box-shadow: none !default;\n\n$custom-radio-indicator-border-radius:          50% !default;\n$custom-radio-indicator-icon-checked:           str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3E%3Ccircle r='3' fill='#{$custom-control-indicator-checked-color}'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n\n$custom-select-padding-y:           .375rem !default;\n$custom-select-padding-x:          .75rem !default;\n$custom-select-height:              $input-height !default;\n$custom-select-indicator-padding:   1rem !default; // Extra padding to account for the presence of the background-image based indicator\n$custom-select-line-height:         $input-btn-line-height !default;\n$custom-select-color:               $input-color !default;\n$custom-select-disabled-color:      $gray-600 !default;\n$custom-select-bg:                  $white !default;\n$custom-select-disabled-bg:         $gray-200 !default;\n$custom-select-bg-size:             8px 10px !default; // In pixels because image dimensions\n$custom-select-indicator-color:     $gray-800 !default;\n$custom-select-indicator:           str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 5'%3E%3Cpath fill='#{$custom-select-indicator-color}' d='M2 0L0 2h4zm0 5L0 3h4z'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n$custom-select-border-width:        $input-btn-border-width !default;\n$custom-select-border-color:        $input-border-color !default;\n$custom-select-border-radius:       $border-radius !default;\n\n$custom-select-focus-border-color:  $input-focus-border-color !default;\n$custom-select-focus-box-shadow:    inset 0 1px 2px rgba($black, .075), 0 0 5px rgba($custom-select-focus-border-color, .5) !default;\n\n$custom-select-font-size-sm:        75% !default;\n$custom-select-height-sm:           $input-height-sm !default;\n\n$custom-select-font-size-lg:        125% !default;\n$custom-select-height-lg:           $input-height-lg !default;\n\n$custom-file-height:                $input-height !default;\n$custom-file-focus-border-color:    $input-focus-border-color !default;\n$custom-file-focus-box-shadow:      $input-btn-focus-box-shadow !default;\n\n$custom-file-padding-y:             $input-btn-padding-y !default;\n$custom-file-padding-x:             $input-btn-padding-x !default;\n$custom-file-line-height:           $input-btn-line-height !default;\n$custom-file-color:                 $input-color !default;\n$custom-file-bg:                    $input-bg !default;\n$custom-file-border-width:          $input-btn-border-width !default;\n$custom-file-border-color:          $input-border-color !default;\n$custom-file-border-radius:         $input-border-radius !default;\n$custom-file-box-shadow:            $input-box-shadow !default;\n$custom-file-button-color:          $custom-file-color !default;\n$custom-file-button-bg:             $input-group-addon-bg !default;\n$custom-file-text: (\n  en: \"Browse\"\n) !default;\n\n\n// Form validation\n$form-feedback-margin-top:          $form-text-margin-top !default;\n$form-feedback-font-size:           $small-font-size !default;\n$form-feedback-valid-color:         theme-color(\"success\") !default;\n$form-feedback-invalid-color:       theme-color(\"danger\") !default;\n\n\n// Dropdowns\n//\n// Dropdown menu container and contents.\n\n$dropdown-min-width:                10rem !default;\n$dropdown-padding-y:                .5rem !default;\n$dropdown-spacer:                   .125rem !default;\n$dropdown-bg:                       $white !default;\n$dropdown-border-color:             rgba($black, .15) !default;\n$dropdown-border-radius:            $border-radius !default;\n$dropdown-border-width:             $border-width !default;\n$dropdown-divider-bg:               $gray-200 !default;\n$dropdown-box-shadow:               0 .5rem 1rem rgba($black, .175) !default;\n\n$dropdown-link-color:               $gray-900 !default;\n$dropdown-link-hover-color:         darken($gray-900, 5%) !default;\n$dropdown-link-hover-bg:            $gray-100 !default;\n\n$dropdown-link-active-color:        $component-active-color !default;\n$dropdown-link-active-bg:           $component-active-bg !default;\n\n$dropdown-link-disabled-color:      $gray-600 !default;\n\n$dropdown-item-padding-y:           .25rem !default;\n$dropdown-item-padding-x:           1.5rem !default;\n\n$dropdown-header-color:             $gray-600 !default;\n\n\n// Z-index master list\n//\n// Warning: Avoid customizing these values. They're used for a bird's eye view\n// of components dependent on the z-axis and are designed to all work together.\n\n$zindex-dropdown:                   1000 !default;\n$zindex-sticky:                     1020 !default;\n$zindex-fixed:                      1030 !default;\n$zindex-modal-backdrop:             1040 !default;\n$zindex-modal:                      1050 !default;\n$zindex-popover:                    1060 !default;\n$zindex-tooltip:                    1070 !default;\n\n// Navs\n\n$nav-link-padding-y:                .5rem !default;\n$nav-link-padding-x:                1rem !default;\n$nav-link-disabled-color:           $gray-600 !default;\n\n$nav-tabs-border-color:             $gray-300 !default;\n$nav-tabs-border-width:             $border-width !default;\n$nav-tabs-border-radius:            $border-radius !default;\n$nav-tabs-link-hover-border-color:  $gray-200 $gray-200 $nav-tabs-border-color !default;\n$nav-tabs-link-active-color:        $gray-700 !default;\n$nav-tabs-link-active-bg:           $body-bg !default;\n$nav-tabs-link-active-border-color: $gray-300 $gray-300 $nav-tabs-link-active-bg !default;\n\n$nav-pills-border-radius:           $border-radius !default;\n$nav-pills-link-active-color:       $component-active-color !default;\n$nav-pills-link-active-bg:          $component-active-bg !default;\n\n// Navbar\n\n$navbar-padding-y:                  ($spacer / 2) !default;\n$navbar-padding-x:                  $spacer !default;\n\n$navbar-nav-link-padding-x:         .5rem !default;\n\n$navbar-brand-font-size:            $font-size-lg !default;\n// Compute the navbar-brand padding-y so the navbar-brand will have the same height as navbar-text and nav-link\n$nav-link-height:                   ($font-size-base * $line-height-base + $nav-link-padding-y * 2) !default;\n$navbar-brand-height:               $navbar-brand-font-size * $line-height-base !default;\n$navbar-brand-padding-y:            ($nav-link-height - $navbar-brand-height) / 2 !default;\n\n$navbar-toggler-padding-y:          .25rem !default;\n$navbar-toggler-padding-x:          .75rem !default;\n$navbar-toggler-font-size:          $font-size-lg !default;\n$navbar-toggler-border-radius:      $btn-border-radius !default;\n\n$navbar-dark-color:                 rgba($white, .5) !default;\n$navbar-dark-hover-color:           rgba($white, .75) !default;\n$navbar-dark-active-color:          $white !default;\n$navbar-dark-disabled-color:        rgba($white, .25) !default;\n$navbar-dark-toggler-icon-bg:       str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='#{$navbar-dark-color}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n$navbar-dark-toggler-border-color:  rgba($white, .1) !default;\n\n$navbar-light-color:                rgba($black, .5) !default;\n$navbar-light-hover-color:          rgba($black, .7) !default;\n$navbar-light-active-color:         rgba($black, .9) !default;\n$navbar-light-disabled-color:       rgba($black, .3) !default;\n$navbar-light-toggler-icon-bg:      str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='#{$navbar-light-color}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n$navbar-light-toggler-border-color: rgba($black, .1) !default;\n\n// Pagination\n\n$pagination-padding-y:              .5rem !default;\n$pagination-padding-x:              .75rem !default;\n$pagination-padding-y-sm:           .25rem !default;\n$pagination-padding-x-sm:           .5rem !default;\n$pagination-padding-y-lg:           .75rem !default;\n$pagination-padding-x-lg:           1.5rem !default;\n$pagination-line-height:            1.25 !default;\n\n$pagination-color:                  $link-color !default;\n$pagination-bg:                     $white !default;\n$pagination-border-width:           $border-width !default;\n$pagination-border-color:           $gray-300 !default;\n\n$pagination-focus-box-shadow:       $input-btn-focus-box-shadow !default;\n\n$pagination-hover-color:            $link-hover-color !default;\n$pagination-hover-bg:               $gray-200 !default;\n$pagination-hover-border-color:     $gray-300 !default;\n\n$pagination-active-color:           $component-active-color !default;\n$pagination-active-bg:              $component-active-bg !default;\n$pagination-active-border-color:    $pagination-active-bg !default;\n\n$pagination-disabled-color:         $gray-600 !default;\n$pagination-disabled-bg:            $white !default;\n$pagination-disabled-border-color:  $gray-300 !default;\n\n\n// Jumbotron\n\n$jumbotron-padding:                 2rem !default;\n$jumbotron-bg:                      $gray-200 !default;\n\n\n// Cards\n\n$card-spacer-y:                     .75rem !default;\n$card-spacer-x:                     1.25rem !default;\n$card-border-width:                 $border-width !default;\n$card-border-radius:                $border-radius !default;\n$card-border-color:                 rgba($black, .125) !default;\n$card-inner-border-radius:          calc(#{$card-border-radius} - #{$card-border-width}) !default;\n$card-cap-bg:                       rgba($black, .03) !default;\n$card-bg:                           $white !default;\n\n$card-img-overlay-padding:          1.25rem !default;\n\n$card-group-margin:                 ($grid-gutter-width / 2) !default;\n$card-deck-margin:                  $card-group-margin !default;\n\n$card-columns-count:                3 !default;\n$card-columns-gap:                  1.25rem !default;\n$card-columns-margin:               $card-spacer-y !default;\n\n\n// Tooltips\n\n$tooltip-font-size:           $font-size-sm !default;\n$tooltip-max-width:           200px !default;\n$tooltip-color:               $white !default;\n$tooltip-bg:                  $black !default;\n$tooltip-border-radius:        $border-radius !default;\n$tooltip-opacity:             .9 !default;\n$tooltip-padding-y:           .25rem !default;\n$tooltip-padding-x:           .5rem !default;\n$tooltip-margin:              0 !default;\n\n$tooltip-arrow-width:         .8rem !default;\n$tooltip-arrow-height:        .4rem !default;\n$tooltip-arrow-color:         $tooltip-bg !default;\n\n\n// Popovers\n\n$popover-font-size:                 $font-size-sm !default;\n$popover-bg:                        $white !default;\n$popover-max-width:                 276px !default;\n$popover-border-width:              $border-width !default;\n$popover-border-color:              rgba($black, .2) !default;\n$popover-border-radius:             $border-radius-lg !default;\n$popover-box-shadow:                0 .25rem .5rem rgba($black, .2) !default;\n\n$popover-header-bg:                 darken($popover-bg, 3%) !default;\n$popover-header-color:              $headings-color !default;\n$popover-header-padding-y:          .5rem !default;\n$popover-header-padding-x:          .75rem !default;\n\n$popover-body-color:                $body-color !default;\n$popover-body-padding-y:            $popover-header-padding-y !default;\n$popover-body-padding-x:            $popover-header-padding-x !default;\n\n$popover-arrow-width:               1rem !default;\n$popover-arrow-height:              .5rem !default;\n$popover-arrow-color:               $popover-bg !default;\n\n$popover-arrow-outer-color:         fade-in($popover-border-color, .05) !default;\n\n\n// Badges\n\n$badge-font-size:                   75% !default;\n$badge-font-weight:                 $font-weight-bold !default;\n$badge-padding-y:                   .25em !default;\n$badge-padding-x:                   .4em !default;\n$badge-border-radius:               $border-radius !default;\n\n$badge-pill-padding-x:              .6em !default;\n// Use a higher than normal value to ensure completely rounded edges when\n// customizing padding or font-size on labels.\n$badge-pill-border-radius:          10rem !default;\n\n\n// Modals\n\n// Padding applied to the modal body\n$modal-inner-padding:         1rem !default;\n\n$modal-dialog-margin:         .5rem !default;\n$modal-dialog-margin-y-sm-up: 1.75rem !default;\n\n$modal-title-line-height:           $line-height-base !default;\n\n$modal-content-bg:               $white !default;\n$modal-content-border-color:     rgba($black, .2) !default;\n$modal-content-border-width:     $border-width !default;\n$modal-content-box-shadow-xs:    0 .25rem .5rem rgba($black, .5) !default;\n$modal-content-box-shadow-sm-up: 0 .5rem 1rem rgba($black, .5) !default;\n\n$modal-backdrop-bg:           $black !default;\n$modal-backdrop-opacity:      .5 !default;\n$modal-header-border-color:   $gray-200 !default;\n$modal-footer-border-color:   $modal-header-border-color !default;\n$modal-header-border-width:   $modal-content-border-width !default;\n$modal-footer-border-width:   $modal-header-border-width !default;\n$modal-header-padding:        1rem !default;\n\n$modal-lg:                          800px !default;\n$modal-md:                          500px !default;\n$modal-sm:                          300px !default;\n\n$modal-transition:                  transform .3s ease-out !default;\n\n\n// Alerts\n//\n// Define alert colors, border radius, and padding.\n\n$alert-padding-y:                   .75rem !default;\n$alert-padding-x:                   1.25rem !default;\n$alert-margin-bottom:               1rem !default;\n$alert-border-radius:               $border-radius !default;\n$alert-link-font-weight:            $font-weight-bold !default;\n$alert-border-width:                $border-width !default;\n\n$alert-bg-level:                    -10 !default;\n$alert-border-level:                -9 !default;\n$alert-color-level:                 6 !default;\n\n\n// Progress bars\n\n$progress-height:                   1rem !default;\n$progress-font-size:                ($font-size-base * .75) !default;\n$progress-bg:                       $gray-200 !default;\n$progress-border-radius:            $border-radius !default;\n$progress-box-shadow:               inset 0 .1rem .1rem rgba($black, .1) !default;\n$progress-bar-color:                $white !default;\n$progress-bar-bg:                   theme-color(\"primary\") !default;\n$progress-bar-animation-timing:     1s linear infinite !default;\n$progress-bar-transition:           width .6s ease !default;\n\n// List group\n\n$list-group-bg:                     $white !default;\n$list-group-border-color:           rgba($black, .125) !default;\n$list-group-border-width:           $border-width !default;\n$list-group-border-radius:          $border-radius !default;\n\n$list-group-item-padding-y:         .75rem !default;\n$list-group-item-padding-x:         1.25rem !default;\n\n$list-group-hover-bg:               $gray-100 !default;\n$list-group-active-color:           $component-active-color !default;\n$list-group-active-bg:              $component-active-bg !default;\n$list-group-active-border-color:    $list-group-active-bg !default;\n\n$list-group-disabled-color:         $gray-600 !default;\n$list-group-disabled-bg:            $list-group-bg !default;\n\n$list-group-action-color:           $gray-700 !default;\n$list-group-action-hover-color:     $list-group-action-color !default;\n\n$list-group-action-active-color:    $body-color !default;\n$list-group-action-active-bg:       $gray-200 !default;\n\n\n// Image thumbnails\n\n$thumbnail-padding:                 .25rem !default;\n$thumbnail-bg:                      $body-bg !default;\n$thumbnail-border-width:            $border-width !default;\n$thumbnail-border-color:            $gray-300 !default;\n$thumbnail-border-radius:           $border-radius !default;\n$thumbnail-box-shadow:              0 1px 2px rgba($black, .075) !default;\n\n\n// Figures\n\n$figure-caption-font-size:          90% !default;\n$figure-caption-color:              $gray-600 !default;\n\n\n// Breadcrumbs\n\n$breadcrumb-padding-y:              .75rem !default;\n$breadcrumb-padding-x:              1rem !default;\n$breadcrumb-item-padding:           .5rem !default;\n\n$breadcrumb-margin-bottom:          1rem !default;\n\n$breadcrumb-bg:                     $gray-200 !default;\n$breadcrumb-divider-color:          $gray-600 !default;\n$breadcrumb-active-color:           $gray-600 !default;\n$breadcrumb-divider:                \"/\" !default;\n\n\n// Carousel\n\n$carousel-control-color:            $white !default;\n$carousel-control-width:            15% !default;\n$carousel-control-opacity:          .5 !default;\n\n$carousel-indicator-width:          30px !default;\n$carousel-indicator-height:         3px !default;\n$carousel-indicator-spacer:         3px !default;\n$carousel-indicator-active-bg:      $white !default;\n\n$carousel-caption-width:            70% !default;\n$carousel-caption-color:            $white !default;\n\n$carousel-control-icon-width:       20px !default;\n\n$carousel-control-prev-icon-bg:     str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n$carousel-control-next-icon-bg:     str-replace(url(\"data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E\"), \"#\", \"%23\") !default;\n\n$carousel-transition:               transform .6s ease !default;\n\n\n// Close\n\n$close-font-size:                   $font-size-base * 1.5 !default;\n$close-font-weight:                 $font-weight-bold !default;\n$close-color:                       $black !default;\n$close-text-shadow:                 0 1px 0 $white !default;\n\n// Code\n\n$code-font-size:                    87.5% !default;\n$code-color:                        $pink !default;\n\n$kbd-padding-y:                     .2rem !default;\n$kbd-padding-x:                     .4rem !default;\n$kbd-font-size:                     $code-font-size !default;\n$kbd-color:                         $white !default;\n$kbd-bg:                            $gray-900 !default;\n\n$pre-color:                         $gray-900 !default;\n$pre-scrollable-max-height:         340px !default;\n\n\n// Printing\n$print-page-size:                   a3 !default;\n$print-body-min-width:              map-get($grid-breakpoints, \"lg\") !default;\n","// stylelint-disable indentation\n\n// Hover mixin and `$enable-hover-media-query` are deprecated.\n//\n// Origally added during our alphas and maintained during betas, this mixin was\n// designed to prevent `:hover` stickiness on iOS—an issue where hover styles\n// would persist after initial touch.\n//\n// For backward compatibility, we've kept these mixins and updated them to\n// always return their regular psuedo-classes instead of a shimmed media query.\n//\n// Issue: https://github.com/twbs/bootstrap/issues/25195\n\n@mixin hover {\n  &:hover { @content; }\n}\n\n@mixin hover-focus {\n  &:hover,\n  &:focus {\n    @content;\n  }\n}\n\n@mixin plain-hover-focus {\n  &,\n  &:hover,\n  &:focus {\n    @content;\n  }\n}\n\n@mixin hover-focus-active {\n  &:hover,\n  &:focus,\n  &:active {\n    @content;\n  }\n}\n"]}
\ No newline at end of file
diff --git a/src/css/bootstrap.css b/src/css/bootstrap.css
new file mode 100644
index 0000000..aa49713
--- /dev/null
+++ b/src/css/bootstrap.css
@@ -0,0 +1,8975 @@
+/*!
+ * Bootstrap v4.0.0 (https://getbootstrap.com)
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+:root {
+  --blue: #007bff;
+  --indigo: #6610f2;
+  --purple: #6f42c1;
+  --pink: #e83e8c;
+  --red: #dc3545;
+  --orange: #fd7e14;
+  --yellow: #ffc107;
+  --green: #28a745;
+  --teal: #20c997;
+  --cyan: #17a2b8;
+  --white: #fff;
+  --gray: #6c757d;
+  --gray-dark: #343a40;
+  --primary: #007bff;
+  --secondary: #6c757d;
+  --success: #28a745;
+  --info: #17a2b8;
+  --warning: #ffc107;
+  --danger: #dc3545;
+  --light: #f8f9fa;
+  --dark: #343a40;
+  --breakpoint-xs: 0;
+  --breakpoint-sm: 576px;
+  --breakpoint-md: 768px;
+  --breakpoint-lg: 992px;
+  --breakpoint-xl: 1200px;
+  --font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+  --font-family-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
+}
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+html {
+  font-family: sans-serif;
+  line-height: 1.15;
+  -webkit-text-size-adjust: 100%;
+  -ms-text-size-adjust: 100%;
+  -ms-overflow-style: scrollbar;
+  -webkit-tap-highlight-color: transparent;
+}
+
+@-ms-viewport {
+  width: device-width;
+}
+
+article, aside, dialog, figcaption, figure, footer, header, hgroup, main, nav, section {
+  display: block;
+}
+
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+  font-size: 1rem;
+  font-weight: 400;
+  line-height: 1.5;
+  color: #212529;
+  text-align: left;
+  background-color: #fff;
+}
+
+[tabindex="-1"]:focus {
+  outline: 0 !important;
+}
+
+hr {
+  box-sizing: content-box;
…
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