::-webkit-scrollbar {
    background-color: rgba(0, 0, 0, 0);
    width: 5px;
}
::-webkit-scrollbar-thumb {
    background-color: rgba(200, 200, 200, 0.7);
    border-radius: 2px;
}

* {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}

html,
body,
main,
section.full {
    width: 100%;
    height: 100%;
}

body {
    margin: 0;
    font-family: "Oswald", "Roboto", sans-serif;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    background-color: #000;
}

h3 {
    letter-spacing: 1px;
}

a,
a:visited {
    color: #fff;
}

main {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-transition: all 0.25s ease-in-out;
    -o-transition: all 0.25s ease-in-out;
    transition: all 0.25s ease-in-out;
}

footer {
    position: fixed;
    bottom: 0;
    color: #fff;
    font-size: 11px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    padding: 5px;
    width: 100%;
    z-index: 3;
    background: -webkit-linear-gradient(
        bottom,
        rgba(0, 0, 0, 0.2),
        rgba(0, 0, 0, 0)
    );
}

footer img {
    width: 14px;
    margin-left: 5px;
}

section.background {
    position: fixed;
    top: 0;
    left: 0;
    cursor: -webkit-grab;
    cursor: grab;
}

section.background.mousedown {
    cursor: -webkit-grabbing;
    cursor: grabbing;
}

section.content {
    width: 100%;
    z-index: 1;
}

section.title,
section.example,
section.documentation,
section.support {
    position: absolute;
    width: 100%;
    max-width: 1000px;
    padding: 20px;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    max-height: 80%;
    color: #fff;
    margin: auto;
    left: 0;
    right: 0;
    -webkit-transition: opacity 0.5s ease-out;
    -o-transition: opacity 0.5s ease-out;
    transition: opacity 0.5s ease-out;
}

section.example,
section.documentation {
    overflow-y: scroll;
    -webkit-overflow-scrolling: touch;
}

section.title,
section.support {
    text-align: center;
    font-size: 72px;
    font-weight: 300;
    pointer-events: none;
    letter-spacing: 2px;
}

section.documentation {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    padding: 5px;
    margin: 0;
    max-width: 100%;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
    -ms-flex-direction: row;
    flex-direction: row;
}

section.example {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    padding: 5px;
    margin: 0;
    max-width: 100%;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
    -ms-flex-direction: row;
    flex-direction: row;
}

section.title header,
section.title article,
section.support header,
section.support article {
    -webkit-transition: all 0.5s ease-out;
    -o-transition: all 0.5s ease-out;
    transition: all 0.5s ease-out;
}

section.title.hide header,
section.title.hide article,
section.support.hide header,
section.support.hide article {
    -webkit-transform: translateY(-30px);
    -ms-transform: translateY(-30px);
    transform: translateY(-30px);
}

section.title.hide,
section.example.hide,
section.documentation.hide,
section.support.hide {
    opacity: 0;
    filter: alpha(opacity=0);
    pointer-events: none;
    z-index: -1;
    display: none;
}

section.support {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

section.support a {
    pointer-events: auto;
    display: inline-block;
}

section.support a img {
    border: 3px solid #fff;
    border-radius: 3px;
}

section.support article {
    margin: 0 0 30px 0;
    max-width: 430px;
}

section.support .link {
    font-size: 12pt;
}

section.support .button {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-image: url("../asset/photo/support.jpg");
    background-size: cover;
    background-position: center;
    -webkit-transition: -webkit-box-shadow 0.3s ease-out;
    transition: -webkit-box-shadow 0.3s ease-out;
    -o-transition: box-shadow 0.3s ease-out;
    transition: box-shadow 0.3s ease-out;
    transition:
        box-shadow 0.3s ease-out,
        -webkit-box-shadow 0.3s ease-out;
    margin: 0 auto 20px auto;
}

section.support .button:hover {
    -webkit-box-shadow: 0 0 25px 5px #fff;
    box-shadow: 0 0 25px 5px #fff;
}

article {
    font-family: "Roboto", sans-serif;
    font-size: 16px;
    letter-spacing: 0.5px;
}

nav {
    position: fixed;
    top: 0;
    color: #fff;
    list-style: none;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: end;
    -ms-flex-pack: end;
    justify-content: flex-end;
    width: 100%;
    padding: 20px;
    background: -webkit-linear-gradient(
        top,
        rgba(0, 0, 0, 0.2),
        rgba(0, 0, 0, 0)
    );
    pointer-events: none;
    z-index: 3;
}

li.item {
    margin: 20px;
    text-transform: uppercase;
    cursor: pointer;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-user-select: none;
    pointer-events: visible;
}

li.item.selected:after {
    -webkit-transform: scaleX(1);
    -ms-transform: scaleX(1);
    transform: scaleX(1);
}

li.item:after {
    content: "";
    background-color: rgba(255, 255, 255, 0.9);
    width: 100%;
    height: 1px;
    margin-top: 5px;
    float: left;
    -webkit-transform: scaleX(0);
    -ms-transform: scaleX(0);
    transform: scaleX(0);
    -webkit-transition: -webkit-transform 0.2s ease;
    transition: -webkit-transform 0.2s ease;
    -o-transition: transform 0.2s ease;
    transition: transform 0.2s ease;
    transition:
        transform 0.2s ease,
        -webkit-transform 0.2s ease;
}

li.item:hover:after {
    -webkit-transform: scaleX(1);
    -ms-transform: scaleX(1);
    transform: scaleX(1);
}

nav a,
nav a:visited {
    text-decoration: none;
    color: #fff;
}

iframe {
    /* margin-top: 0.5em; */
    border: none;
    width: 100%;
    height: 300px;
}

figure {
    background-size: cover;
    background-position: center -40px;
    background-repeat: no-repeat;
    margin: 0;
    -webkit-box-flex: 1;
    -ms-flex-positive: 1;
    flex-grow: 1;
    -ms-flex-preferred-size: 250px;
    flex-basis: 250px;
    height: 300px;
}

figcaption {
    width: 100%;
    background: #fff;
    position: absolute;
    bottom: 0;
    color: #444;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    padding-bottom: 15px;
    padding-left: 15px;
    text-align: left;
}

figcaption > h4 {
    margin: 0;
    text-transform: uppercase;
}

figcaption > article {
    margin-top: 7px;
    letter-spacing: 0;
    font-size: 13px;
}

.card {
    border-radius: 2px;
    cursor: pointer;
    margin: 1em;
    position: relative;
    overflow: hidden;
    -webkit-box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.12),
        0 1px 2px rgba(0, 0, 0, 0.24);
    box-shadow:
        0 1px 3px rgba(0, 0, 0, 0.12),
        0 1px 2px rgba(0, 0, 0, 0.24);
    -webkit-transition: all 0.1s ease-in-out;
    -o-transition: all 0.1s ease-in-out;
    transition: all 0.1s ease-in-out;
}

.card.codepen {
    -ms-flex-preferred-size: 450px;
    flex-basis: 450px;
    height: 350px;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
}

.group {
    display: contents;
}

.group-title {
    -webkit-box-flex: 1;
    -ms-flex: 1 0 100%;
    flex: 1 0 100%;
    padding: 0 20px;
}

.cp_embed_wrapper > iframe {
    height: 100%;
    margin-top: 0;
}

.cp_embed_wrapper {
    height: calc(100% - 76px);
}

.menu-icon {
    width: 60px;
    height: 45px;
    position: relative;
    margin: 50px auto;
    -webkit-transform: rotate(0deg) scale(0.4);
    -ms-transform: rotate(0deg) scale(0.4);
    transform: rotate(0deg) scale(0.4);
    -webkit-transition: 0.5s ease-in-out;
    -o-transition: 0.5s ease-in-out;
    transition: 0.5s ease-in-out;
    cursor: pointer;
    position: fixed;
    top: 0;
    right: 0;
    margin: 20px;
    z-index: 4;
    display: none;
}

.menu-icon span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: #ddd;
    border-radius: 2px;
    opacity: 1;
    filter: alpha(opacity=100);
    left: 0;
    -webkit-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: 0.25s ease-in-out;
    -o-transition: 0.25s ease-in-out;
    transition: 0.25s ease-in-out;
}

.menu-icon span:nth-child(1) {
    top: 0px;
    -webkit-transform-origin: left center;
    -ms-transform-origin: left center;
    transform-origin: left center;
}

.menu-icon span:nth-child(2) {
    top: 18px;
    -webkit-transform-origin: left center;
    -ms-transform-origin: left center;
    transform-origin: left center;
}

.menu-icon span:nth-child(3) {
    top: 36px;
    -webkit-transform-origin: left center;
    -ms-transform-origin: left center;
    transform-origin: left center;
}

.menu-icon.open span:nth-child(1) {
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
    top: -3px;
    left: 8px;
}

.menu-icon.open span:nth-child(2) {
    width: 0%;
    opacity: 0;
    filter: alpha(opacity=0);
}

.menu-icon.open span:nth-child(3) {
    -webkit-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    transform: rotate(-45deg);
    top: 39px;
    left: 8px;
}

#progress {
    width: 0;
    height: 5px;
    position: fixed;
    top: 0;
    background: #fff;
    -webkit-transition: opacity 0.5s ease;
    -o-transition: opacity 0.5s ease;
    transition: opacity 0.5s ease;
    z-index: 99999;
}

#progress.finish {
    opacity: 0;
}

_:-ms-lang(x),
section.example {
    display: inline;
}
_:-ms-lang(x),
.group {
    column-count: 4;
    column-gap: 0;
}

_:-ms-lang(x),
.group-title {
    column-span: all;
}

@media screen and (max-width: 1200px) {
    _:-ms-lang(x),
    .group {
        column-count: 3;
    }
}

@media screen and (max-width: 800px) {
    _:-ms-lang(x),
    .group {
        column-count: 2;
    }
}

@media screen and (max-width: 500px) {
    section.title,
    section.example,
    section.documentation {
        max-height: 100%;
    }
    section.title header {
        font-size: 50px;
    }
    section.title article {
        font-size: 13px;
    }
    section.support article {
        max-width: 300px;
    }
    nav {
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        text-align: center;
        -webkit-transform: translateY(-100%);
        -ms-transform: translateY(-100%);
        transform: translateY(-100%);
        background: #fff;
        color: #444;
    }
    nav.animated {
        -webkit-transition: all 0.25s ease-in-out;
        -o-transition: all 0.25s ease-in-out;
        transition: all 0.25s ease-in-out;
    }
    nav.open {
        -webkit-transform: translateY(0);
        -ms-transform: translateY(0);
        transform: translateY(0);
        pointer-events: auto;
    }
    nav a,
    nav a:visited {
        color: #444;
    }
    li.item:after {
        background-color: #444;
    }
    .menu-icon {
        margin: 20px 0;
        display: block;
    }
    .menu-icon.open span {
        background: #444;
    }
    _:-ms-lang(x),
    .group {
        column-count: 1;
    }
}

* {
    box-sizing: border-box;
}

.container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wrapper {
    display: flex;
    width: 90%;
    justify-content: space-around;
}

@media (min-width: 320px) {
    .more {
        position: absolute;
        top: 75%;
        left: 50%;
        margin-right: -50%;
        transform: translate(-50%, -50%);
        z-index: 4;
    }
}

@media (min-width: 961px) {
    .more {
        position: absolute;
        top: 65%;
        left: 50%;
        margin-right: -50%;
        transform: translate(-50%, -50%);
        z-index: 4;
    }
}