main.css

/* ==========================================================================
   HTML5 Boilerplate styles - h5bp.com (generated via initializr.com)
   ========================================================================== */
* {
    box-sizing: border-box;
}

html,
button,
input,
select,
textarea {
    color: #222;
}

body {
    font-size: 1em;
    line-height: 1.4;
}

::-moz-selection {
    background: #b3d4fc;
    text-shadow: none;
}

::selection {
    background: #b3d4fc;
    text-shadow: none;
}

hr {
    display: block;
    height: 1px;
    border: 0;
    border-top: 1px solid #ccc;
    margin: 1em 0;
    padding: 0;
}

img {
    vertical-align: middle;
}

fieldset {
    border: 0;
    margin: 0;
    padding: 0;
}

textarea {
    resize: vertical;
}

.chromeframe {
    margin: 0.2em 0;
    background: #ccc;
    color: #000;
    padding: 0.2em 0;
}


/* ===== Initializr Styles ==================================================
   Author: Jonathan Verrecchia - verekia.com/initializr/responsive-template
   ========================================================================== */

body {
    font: 16px/26px Helvetica, Helvetica Neue, Arial;
}

.wrapper {
    width: 90%;
    margin: 0 5%;
}

/* ===================
    ALL: Orange Theme
   =================== */

.header-container {
    border-bottom: 20px solid #e44d26;
}

.footer-container,
.main aside {
    border-top: 20px solid #e44d26;
}

.header-container,
.footer-container,
.main aside {
    background: #f16529;
}

.title {
    color: white;
}

/* ==============
    MOBILE: Menu
   ============== */

nav ul {
    margin: 0;
    padding: 0;
}

nav a {
    display: block;
    margin-bottom: 10px;
    padding: 15px 0;

    text-align: center;
    text-decoration: none;
    font-weight: bold;

    color: white;
    background: #e44d26;
}

nav a:hover,
nav a:visited {
    color: white;
}

nav a:hover {
    text-decoration: underline;
}

/* ==============
    MOBILE: Main
   ============== */

.main {
    padding: 30px 0;
}

.main article h1 {
    font-size: 2em;
}

.main aside {
    color: white;
    padding: 0px 5% 10px;
}

.footer-container footer {
    color: white;
    padding: 20px 0;
}

/* ===============
    ALL: IE Fixes
   =============== */

.ie7 .title {
    padding-top: 20px;
}

/* ==========================================================================
   Author's custom styles
   ========================================================================== */

body {
    max-width: 62.5em;
    margin: 0 auto;
    color: #333;
    padding: 0 2em;
}

figure {
    text-align: center;
}
x-picture {
    display: inline-block;
    max-width: 100%;
}


code {
    display: inline-block;
    background-color: #f8f8ff;
    padding: 0 .5em;
    color: #00008f;
}


.caution {
    background-color: hsla(60, 90%, 80%, .3);
    border: 1px solid hsla(60, 90%, 80%, .5);
    color: hsla(50, 90%, 40%, 1);
    padding: .25em 1em .25em 3em;
    margin: 1em 0;
    position: relative;
}
.caution:before {
    content: '';
    position: absolute;
    left: 1em;
    top: -.5em;
    /*margin-bottom: -.5em;*/
    border-width: 1em .667em;
    border-style: solid;
    border-color: transparent;
    border-bottom-color: hsla(50, 90%, 80%, .4);   
}
.caution p {
    margin: 0;
}







/* ==========================================================================
   Media Queries
   ========================================================================== */

@media only screen and (min-width: 480px) {
}

@media only screen and (min-width: 56.25em) {

/* ===============
    Maximal Width
   =============== */

    body {
        padding: 0 1em 0 8em;
    }


    pre {
        margin: 2em 6em;
    }
}

/* ==========================================================================
   Helper classes
   ========================================================================== */

.ir {
    background-color: transparent;
    border: 0;
    overflow: hidden;
    *text-indent: -9999px;
}

.ir:before {
    content: "";
    display: block;
    width: 0;
    height: 150%;
}

.hidden {
    display: none !important;
    visibility: hidden;
}

.visuallyhidden {
    border: 0;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
}

.visuallyhidden.focusable:active,
.visuallyhidden.focusable:focus {
    clip: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    position: static;
    width: auto;
}

.invisible {
    visibility: hidden;
}

.clearfix:before,
.clearfix:after {
    content: " ";
    display: table;
}

.clearfix:after {
    clear: both;
}

.clearfix {
    *zoom: 1;
}

/* ==========================================================================
   Print styles
   ========================================================================== */

@media print {
    * {
        background: transparent !important;
        color: #000 !important; /* Black prints faster: h5bp.com/s */
        box-shadow: none !important;
        text-shadow: none !important;
    }

    a,
    a:visited {
        text-decoration: underline;
    }

    a[href]:after {
        content: " (" attr(href) ")";
    }

    abbr[title]:after {
        content: " (" attr(title) ")";
    }

    /*
     * Don't show links for images, or javascript/internal links
     */

    .ir a:after,
    a[href^="javascript:"]:after,
    a[href^="#"]:after {
        content: "";
    }

    pre,
    blockquote {
        border: 1px solid #999;
        page-break-inside: avoid;
    }

    thead {
        display: table-header-group; /* h5bp.com/t */
    }

    tr,
    img {
        page-break-inside: avoid;
    }

    img {
        max-width: 100% !important;
    }

    @page {
        margin: 0.5cm;
    }

    p,
    h2,
    h3 {
        orphans: 3;
        widows: 3;
    }

    h2,
    h3 {
        page-break-after: avoid;
    }
}