_normalize.scss

@import 'systematize.h';

/* Document
   ========================================================================== */

/*
 * 1. Change the default font family in all browsers (opinionated).
 * 2. Set large line height in all browsers (opinionated).
 * 3. Force a non-overlapping, non-auto-hiding scrollbar in IE11 and Edge.
 * 4. Prevent adjustments of font size after orientation changes in iOS.
 */

html {
  font-family: $sys-font-stack; // 1
  line-height: 1.58; // 2
  -ms-overflow-style: scrollbar; // 3
  -webkit-text-size-adjust: 100%; // 4
}

/* Sections
   ========================================================================== */

/*
 * Remove the margin in all browsers (opinionated).
 */

body {
  margin: 0;
}

/*
 * Correct the font size and margin on `h1` elements within `section` and
 * `article` contexts in Chrome, Firefox, and Safari.
 */

h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

/* Grouping content
   ========================================================================== */

/*
 * Add the correct display in IE.
 */

main {
  display: block;
}

/*
 * 1. Add the correct box sizing in Firefox.
 * 2. Show the overflow in Edge and IE.
 */

hr {
  box-sizing: content-box; // 1
  height: 0; // 1
  overflow: visible; // 2
}

/*
 * 1. Change the default monospaced font family in all browsers (opinionated).
 * 2. Correct the odd `em` font sizing in all browsers.
 */

pre {
  font-family: $sys-font-stack-mono; // 1
  font-size: 1em; // 2
}

/* Text-level semantics
   ========================================================================== */

/*
 * Remove the gray background on active links in IE 10.
 */

a {
  background-color: transparent;
}

/*
 * 1. Remove the bottom border in Chrome 57- and Firefox 39-.
 * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
 */

abbr[title] {
  border-bottom: 0; // 1
  text-decoration: underline; // 2
  text-decoration: underline dotted; // 2
}

/*
 * Add the correct font weight in Chrome, Edge, and Safari.
 */

b,
strong {
  font-weight: bolder;
}

/*
 * 1. Change the default monospaced font family in all browsers (opinionated).
 * 2. Correct the odd `em` font sizing in all browsers.
 */

code,
kbd,
samp {
  font-family: $sys-font-stack-mono; // 1
  font-size: 1em; // 2
}

/*
 * Add the correct font size in all browsers.
 */

small {
  font-size: 80%;
}

/*
 * Prevent `sub` and `sup` elements from affecting the line height in
 * all browsers.
 */

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}

/*
 * 1. Remove the text shadow on text selections (opinionated).
 * 2. Restore the coloring undone by defining the text shadow (opinionated).
 */

::-moz-selection {
  background-color: $sys-selection-background; // 2
  color: $sys-selection-color;
  text-shadow: none; // 1
}

::selection {
  background-color: $sys-selection-background; // 2
  color: $sys-selection-color;
  text-shadow: none; // 1
}

/* Embedded content
   ========================================================================== */

/*
 * Remove the border on `iframe` elements in all browsers (opinionated).
 */

iframe {
  border: 0;
}

/*
 * Remove the border on images inside links in IE 10-.
 */

img {
  border-style: none;
}

/* Tabular data
   ========================================================================== */

/*
 * Collapse border spacing
 */

table {
  border-collapse: collapse;
}

/* Forms
   ========================================================================== */

@if $sys-normalize-fonts-inputs {
  /*
   * 1. Change the font family and size in all browsers (opinionated).
   * 2. Set large line height in all browsers (opinionated).
   * 3. Remove the margin in Firefox and Safari.
   */

  button,
  input,
  optgroup,
  select,
  textarea {
    font-family: inherit; // 1
    font-size: 100%; // 1
    line-height: 1.58; // 2
    margin: 0; // 3
  }
}
@else {
  /*
   * 1. Remove the margin in Firefox and Safari.
   */

  button,
  input,
  optgroup,
  select,
  textarea {
    margin: 0; // 1
  }
}

/*
 * Show the overflow in Edge.
 */

button,
input {
  overflow: visible;
}

/*
 * Remove the inheritance of text transform in Firefox.
 */

button,
select {
  text-transform: none;
}

/*
 * Correct the inability to style clickable types in iOS and Safari.
 */

button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}

/*
 * Remove the inner border and padding in Firefox.
 */

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
  border-style: none;
  padding: 0;
}

/*
 * Restore the focus styles unset by the previous rule.
 */

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
  outline: 1px dotted ButtonText;
}

/*
 * Correct the padding in Firefox.
 */

fieldset {
  padding: 0.35em 0.75em 0.625em;
}

/*
 * 1. Correct the text wrapping in Edge and IE.
 * 2. Correct the color inheritance from `fieldset` elements in IE.
 * 3. Remove the padding so developers are not caught out when they zero out
 *    `fieldset` elements in all browsers.
 */

legend {
  box-sizing: border-box; // 1
  color: inherit; // 2
  display: table; // 1
  max-width: 100%; // 1
  padding: 0; // 3
  white-space: normal; // 1
}

/*
 * Add the correct vertical alignment in Chrome, Firefox, and Opera.
 */

progress {
  vertical-align: baseline;
}

/*
 * 1. Remove the default vertical scrollbar in IE.
 * 2. Change the resize direction on textareas in all browsers (opinionated).
 */

textarea {
  overflow: auto; // 1
  resize: vertical; // 2
}

/*
 * 1. Add the correct box sizing in IE 10-.
 * 2. Remove the padding in IE 10-.
 */

[type="checkbox"],
[type="radio"] {
  box-sizing: border-box; // 1
  padding: 0; // 2
}

/*
 * Correct the cursor style of increment and decrement buttons in Chrome.
 */

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto;
}

/*
 * 1. Correct the odd appearance in Chrome and Safari.
 * 2. Correct the outline style in Safari.
 */

[type="search"] {
  -webkit-appearance: textfield; // 1
  outline-offset: -2px; // 2
}

/*
 * Remove the inner padding in Chrome and Safari on macOS.
 */

[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

@if $sys-normalize-fonts-inputs {
  /*
   * 1. Correct the inability to style clickable types in iOS and Safari.
   * 2. Change font properties to `inherit` in Safari.
   */

  ::-webkit-file-upload-button {
    -webkit-appearance: button; // 1
    font: inherit; // 2
  }
}
@else {
  /*
   * 1. Correct the inability to style clickable types in iOS and Safari.
   */

  ::-webkit-file-upload-button {
    -webkit-appearance: button; // 1
  }
}

/* Interactive elements
   ========================================================================== */

/*
 * Add the correct display in Edge, IE 10+, and Firefox.
 */

details {
  display: block;
}

/*
 * Add the correct display in all browsers.
 */

summary {
  display: list-item;
}

/* Scripting
   ========================================================================== */

/*
 * Add the correct display in IE.
 */

template {
  display: none;
}

/* User interaction
   ========================================================================== */

/*
 * Remove the tapping delay on clickable elements (opinionated).
 * 1. Remove the tapping delay in IE 10.
 */

a,
area,
button,
input,
label,
select,
summary,
textarea,
[tabindex] {
  -ms-touch-action: manipulation; // 1
  touch-action: manipulation;
}

/*
 * Add the correct display in IE 10-.
 */

[hidden] {
  display: none;
}

/*
 * Suppress the focus outline on elements that cannot be accessed via keyboard.
 */

[tabindex="-1"]:focus {
  outline: 0;
}