body {
    margin: 4em;
    background: #f7f7f7;
    font-family: Lato;
    font-weight: 300;
    line-height: 1.4em;
}

a, button {
    -webkit-transition: all 0.2s ease-out;
    transition: all 0.2s ease-out;
    cursor: pointer;
}

[class^="icon-"], [class*=" icon-"] {
    display: inline-block;
    width: 1em;
    height: 1em;
    fill: currentColor;
}

#panel {
    display: none;
    position: absolute;
    width: 500px;
    height: auto;
    top: 50%;
    left: 50%;
    -webkit-perspective: 1000px;
    perspective: 1000px;
    -webkit-transition: all 0.15s ease-out;
    transition: all 0.15s ease-out;
    -webkit-transform: translate(-50%, -50%) rotateY(0deg) rotateX(0deg) rotateZ(0deg);
    transform: translate(-50%, -50%) rotateY(0deg) rotateX(0deg) rotateZ(0deg);
}
#panel #panel-inner {
    background: #fff;
    box-shadow: 0 20px 100px rgba(0, 0, 0, 0.2);
    padding: 3em;
    border-radius: 16px;
}
#panel #panel-inner .panel-close {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: 3em;
    line-height: 3em;
    text-align: center;
    border-radius: 0 16px 0 16px;
    color: #aaa;
}
#panel #panel-inner .panel-close svg {
    pointer-events: none;
}
#panel #panel-inner .panel-close:hover {
    background: #f88;
    color: #fff;
}
#panel footer {
    margin: 2.5em -3em -3em -3em;
    overflow: hidden;
}
#panel footer button {
    display: block;
    width: 50%;
    padding: 1.5em 1em;
    float: left;
    background: #fff;
    border: none;
    border-top: 1px solid #eee;
    color: #888;
    outline: none;
}
#panel footer button.border-radius-left {
    display: none;
    border-radius: 0 0 0 16px;
}
#panel footer button.border-radius-right {
    display: none;
    border-radius: 0 0 16px 0;
}
#panel footer button:hover {
    background: #f88;
    color: #fff;
}