*, *:before, *:after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100vh;
}

body {
    font: 600 14px 'Roboto', sans-serif;
    color: #000000;
    background: #000000;
    overflow-x: hidden;
}

.container {
    display: flex;
    min-height: 100%;
}

.sidebar {
    position: absolute;
    width: 220px;
}

.content {
    flex: 1;
    padding: 30px;
    background: #444444;
    box-shadow: 0 0 5px rgba(0,0,0,1);
    transform: translate3d(0,0,0);
    transition: transform .3s;
    color: #cccccc;
}

.content.isOpen {
    transform: translate3d(220px,0,0);
}

.button {
    position: relative;
    width: 120px;
    height: 40px;
    cursor: pointer;
    margin: 10px 0 40px 0;
    padding: 15px;
    transition-property: opacity, filter;
    transition-duration: .15s;
    text-transform: none;
}

.button-inner {
    left: 0;
    top: 50%;
    display: inline-block;
    margin-top: -2px;
}

.button-inner,
.button-inner::after,
.button-inner::before {
    background-color: #fff;
    position: absolute;
    width: 40px;
    height: 4px;
    transition: transform 0.15s ease;
    border-radius: 4px;
}

.button-inner::before,
.button-inner::after {
    content: "";
    display: block;
}

.button-inner::before {
    top: -10px;
}

.button-inner::after {
    bottom: -10px;
}

.button.isOpen .button-inner::before {
    transform: translate3d(-8px, 0, 0) rotate(-45deg) scale(0.7, 1);
}

.button.isOpen .button-inner::after {
    transform: translate3d(-8px, 0, 0) rotate(45deg) scale(0.7, 1);
}

.button-label {
    position: absolute;
    top: 6px;
    left: 50px;
    font-size: 24px;
    color: #fff;
}

.sidebar-title {
    color: #2a9fd6;
    cursor: pointer;
    font-size: 16px;
    line-height: 50px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 7px;
    border-bottom: 1px solid #222;
    background: #2a2a2a;
}

.nav li a {
    outline: 0;
    position: relative;
    display: block;
    padding: 20px 0 20px 50px;
    font-size: 14px;
    color: #eee;
    background: #333333;
    border-bottom: 1px solid #222;
    text-decoration: none;
}

.nav li a:before {
    font: 14px fontawesome;
    position: absolute;
    top: 19px;
    left: 20px;
}

.nav li:nth-child(1) a:before { content: '\f00a'; }
.nav li:nth-child(2) a:before { content: '\f002'; }
.nav li:nth-child(3) a:before { content: '\f084'; }
.nav li:nth-child(4) a:before { content: '\f0e0'; }
.nav li:nth-child(5) a:before { content: '\f0c0'; }
.nav li:nth-child(6) a:before { content: '\f233'; }
.nav li:nth-child(7) a:before { content: '\f023'; left: 23px; }

.nav li a:hover {
    background: #444;
}

::-moz-focus-inner {border: 0;}

.nav li a.active {
    box-shadow: inset 5px 0 0 #2A9FD6, inset 6px 0 0 #222;
    background: #444;
}

.inner {
    display: flex;
    flex-direction: column;
}

.keys {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
}

.key {
    background: #555;
    border: 3px solid #2a9fd6;
    border-radius: 5px;
    box-shadow: 5px 5px 10px #000;
    margin: 20px;
    width: 300px;
    height: 100px;
    cursor: pointer;
    display: flex;
    justify-content: flex-start;
    flex-direction: row;
    transition: box-shadow 0.2s;
}

.key:hover {
    box-shadow: 0 0 10px #eee;
}

.key i {
    font-size: 48px;
    margin: auto 0 auto 20px;
}

.key span {
    font-size: 16px;
    vertical-align: center;
    margin: auto;
    -moz-user-select: none;
    user-select: none;
}