main.css

/*! HTML5 Boilerplate v6.0.1 | MIT License | https://html5boilerplate.com/ */

/*
 * What follows is the result of much research on cross-browser styling.
 * Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
 * Kroc Camen, and the H5BP dev community and team.
 */

/* ==========================================================================
   Base styles: opinionated defaults
   ========================================================================== */

html {
    color: #222;
    font-size: 1em;
    line-height: 1.4;
}

/*
 * Remove text-shadow in selection highlight:
 * https://twitter.com/miketaylr/status/12228805301
 *
 * Vendor-prefixed and regular ::selection selectors cannot be combined:
 * https://stackoverflow.com/a/16982510/7133471
 *
 * Customize the background color to match your design.
 */

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

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

/*
 * A better looking default horizontal rule
 */

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

/*
 * Remove the gap between audio, canvas, iframes,
 * images, videos and the bottom of their containers:
 * https://github.com/h5bp/html5-boilerplate/issues/440
 */

audio, canvas, iframe, img, svg, video {
    vertical-align: middle;
}

/*
 * Remove default fieldset styles.
 */

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

/*
 * Allow only vertical resizing of textareas.
 */

textarea {
    resize: vertical;
}

/* ==========================================================================
   Browser Upgrade Prompt
   ========================================================================== */

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

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

body {
    font-family: 'Roboto', sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: inherit;
}

nav {
    position: fixed;
    top: 0;
    width: 100vw;
    height: 96px;
    color: white;
    font-weight: 100;
    transition: all 200ms ease-in-out;
    z-index: 10;
}

nav>ul {
    margin: 0 auto;
    width: 960px;
    max-width: 80%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    list-style: none;
    padding: 0;
}

nav>ul>li {
    width: 100px;
    text-align: center;
    -webkit-font-smoothing: subpixel-antialiased;
}

nav>ul>li:hover {
    text-decoration: underline;
    cursor: pointer;
}

header {
    width: 100vw;
    height: 100vh;
    box-sizing: border-box;
    padding-top: 100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: #000;
    background-image: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url("https://source.unsplash.com/9QrjShkAmnM/2560x1600");
    background-size: cover;
    background-attachment: fixed;
    color: white;
}

header>* {
    animation: appear 1000ms forwards;
}

header>.logo {
    width: 200px;
    height: 200px;
    background: url("../img/Trowler-noBG.svg");
    background-size: cover;
}

header>h1 {
    font-weight: 100;
}

header>p {
    font-weight: 100;
    -webkit-font-smoothing: subpixel-antialiased;
}

.arrow {
    position: absolute;
    bottom: 30px;
    left: 50%;
    margin-left: -7px;
    opacity: 0;
    width: 24px;
    height: 24px;
	color: white;
}

/* Article */

article {
    box-sizing: border-box;
    width: 960px;
    max-width: 80%;
    margin: 0 auto;
}

section {
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding-top: 150px;
}

.left {
    min-width: 400px;
}

.right>img {
    height: 30vw;
    min-height: 300px;
}

.how {
    transform: translateX(10vw);
}

.feature>.right>img {
    height: 20vw;
    transform: translateX(-10vw);
}

@keyframes appear {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* TERMINAL - Installation */

.install {
    flex-direction: column;
}

.window {
    width: 80%;
    margin: 0 auto 2rem;
    box-shadow: 0 0.25rem 0.5rem #12181e;
    border-radius: 0 0 0.1rem 0.1rem;
    color: white;
}

.bar {
    background: #191919;
    height: 36px;
    border-radius: 0.5rem 0.5rem 0 0;
}

.btn, .btn::before, .btn::after {
    width: 12px;
    height: 12px;
    border-radius: 100%;
    display: block;
}

.btn {
    background: #f6b73e;
    position: relative;
    margin-left: 38px;
    top: 12px;
}

.btn::before, .btn::after {
    content: " ";
    position: absolute;
}

.btn::before {
    background: #f55551;
    margin-left: -20px;
}

.btn::after {
    background: #32c146;
    margin-left: 20px;
}

.body {
    height: 10rem;
    background: #232323;
    padding: 18px;
}

.body pre {
    margin: 0;
}

.body .pulse {
    -webkit-animation: pulse 1s ease-in-out infinite;
    -moz-animation: pulse 1s ease-in-out infinite;
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0% {
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

.command {
    color: #32c146;
}

.comment {
    opacity: 0.5;
}

/* footer */

footer {
    width: 100vw;
    height: 70vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

footer>h1 {
    font-size: 3.5em;
}

footer>p {
    opacity: 0.7;
}

@media (max-width: 900px) {
    section {
        flex-wrap: wrap;
    }
    img {
        transform: none !important;
    }
}

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

/*
 * Hide visually and from screen readers
 */

.hidden {
    display: none !important;
}

/*
 * Hide only visually, but have it available for screen readers:
 * https://snook.ca/archives/html_and_css/hiding-content-for-accessibility
 *
 * 1. For long content, line feeds are not interpreted as spaces and small width
 *    causes content to wrap 1 word per line:
 *    https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe
 */

.visuallyhidden {
    border: 0;
    clip: rect(0 0 0 0);
    -webkit-clip-path: inset(50%);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    white-space: nowrap;
    /* 1 */
}

/*
 * Extends the .visuallyhidden class to allow the element
 * to be focusable when navigated to via the keyboard:
 * https://www.drupal.org/node/897638
 */

.visuallyhidden.focusable:active, .visuallyhidden.focusable:focus {
    clip: auto;
    -webkit-clip-path: none;
    clip-path: none;
    height: auto;
    margin: 0;
    overflow: visible;
    position: static;
    width: auto;
    white-space: inherit;
}

/*
 * Hide visually and from screen readers, but maintain layout
 */

.invisible {
    visibility: hidden;
}

/*
 * Clearfix: contain floats
 *
 * For modern browsers
 * 1. The space content is one way to avoid an Opera bug when the
 *    `contenteditable` attribute is included anywhere else in the document.
 *    Otherwise it causes space to appear at the top and bottom of elements
 *    that receive the `clearfix` class.
 * 2. The use of `table` rather than `block` is only necessary if using
 *    `:before` to contain the top-margins of child elements.
 */

.clearfix:before, .clearfix:after {
    content: " ";
    /* 1 */
    display: table;
    /* 2 */
}

.clearfix:after {
    clear: both;
}

/* ==========================================================================
   EXAMPLE Media Queries for Responsive Design.
   These examples override the primary ('mobile first') styles.
   Modify as content requires.
   ========================================================================== */

@media only screen and (min-width: 35em) {
    /* Style adjustments for viewports that meet the condition */
}

@media print, (-webkit-min-device-pixel-ratio: 1.25), (min-resolution: 1.25dppx), (min-resolution: 120dpi) {
    /* Style adjustments for high resolution devices */
}

/* ==========================================================================
   Print styles.
   Inlined to avoid the additional HTTP request:
   http://www.phpied.com/delay-loading-your-print-css/
   ========================================================================== */

@media print {
    *, *:before, *:after {
        background: transparent !important;
        color: #000 !important;
        /* Black prints faster:
                                   http://www.sanbeiji.com/archives/953 */
        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 that are fragment identifiers,
     * or use the `javascript:` pseudo protocol
     */
    a[href^="#"]:after, a[href^="javascript:"]:after {
        content: "";
    }
    pre {
        white-space: pre-wrap !important;
    }
    pre, blockquote {
        border: 1px solid #999;
        page-break-inside: avoid;
    }
    /*
     * Printing Tables:
     * http://css-discuss.incutio.com/wiki/Printing_Tables
     */
    thead {
        display: table-header-group;
    }
    tr, img {
        page-break-inside: avoid;
    }
    p, h2, h3 {
        orphans: 3;
        widows: 3;
    }
    h2, h3 {
        page-break-after: avoid;
    }
}