demo.css

body {
    max-width: 700px;
    margin: 0 auto;
    padding: 45px 10px;
    position: relative;
}

.show-dialog {
    cursor: pointer;
    border: 1px solid #f00;
    width: 120px;
    height: 40px;
    line-height: 40px!important;
    text-align: center;
    border-radius: 4px;
}
.float-dplayer {
    display: none;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, .3);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 99;
}
.dplayer-container {
    width: 700px;
    height: 358px;
    border: 1px solid #f00;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.close-dialog {
    position: absolute;
    right: 40px;
    top: 10px;
    font-size: 40px!important;
    font-weight: normal!important;
    color: #fff;
    cursor: pointer;
    z-index: 100;
}

.example {
    position: relative;
    margin: 15px 0 0;
    padding: 39px 19px 14px;
    background-color: #fff;
    border-radius: 4px 4px 0 0;
    border: 1px solid #ddd;
}

@media (max-width:500px) {
    .example {
        padding: 39px 10px 14px;
    }
}

.example:after {
    content: "Example";
    position: absolute;
    top: 0;
    left: 0;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: bold;
    background-color: #f5f5f5;
    color: #9da0a4;
    border-radius: 4px 0 4px 0;
}

.highlight {
    position: relative;
    border-radius: 0 0 4px 4px;
    border: 1px solid #ddd;
    border-top: none;
}

.highlight.highlight-middle {
    margin: 0;
    border-radius: 0;
}

.highlight-html:after {
    content: "HTML";
    position: absolute;
    top: 0;
    right: 0;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: bold;
    background-color: #f5f5f5;
    color: #555;
    border-radius: 0 0 0 4px;
}

.highlight-js:after {
    content: "js";
    position: absolute;
    top: 0;
    right: 0;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: bold;
    background-color: #f5f5f5;
    color: #555;
    border-radius: 0 0 0 4px;
}

.btn {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    height: 40px;
    font-size: 14px;
    margin: 0 0 10px;
    cursor: pointer;
    outline: none;
}

summary {
    outline: none;
    cursor: pointer;
    margin-bottom: 10px;
}

#events {
    font-size: 12px;
    margin-top: 5px;
    height: 120px;
    overflow: scroll;
}

#events p {
    margin: 0;
    line-height: 17px;
}

/* github-corner */
.github-corner:hover .octo-arm {
    animation: octocat-wave 560ms ease-in-out
}

@keyframes octocat-wave {
    0%,
    100% {
        transform: rotate(0)
    }
    20%,
    60% {
        transform: rotate(-25deg)
    }
    40%,
    80% {
        transform: rotate(10deg)
    }
}

@media (max-width:500px) {
    .github-corner:hover .octo-arm {
        animation: none
    }
    .github-corner .octo-arm {
        animation: octocat-wave 560ms ease-in-out
    }
}

/* modernizr */
.adownload li.adownload{ color: green; }.canvas li.canvas{ color: green; }.cssanimations li.cssanimations{ color: green; }.csstransforms li.csstransforms{ color: green; }.documentfragment li.documentfragment{ color: green; }.fullscreen li.fullscreen{ color: green; }.localstorage li.localstorage{ color: green; }.svg li.svg{ color: green; }.texttrackapi li.texttrackapi{ color: green; }.track li.track{ color: green; }.todataurljpeg li.todataurljpeg{ color: green; }.todataurlpng li.todataurlpng{ color: green; }.todataurlwebp li.todataurlwebp{ color: green; }.video li.video{ color: green; }.websockets li.websockets{ color: green; }.setclasses li.setclasses{ color: green; }
.no-adownload li.adownload{ color: red; }.no-canvas li.canvas{ color: red; }.no-cssanimations li.cssanimations{ color: red; }.no-csstransforms li.csstransforms{ color: red; }.no-documentfragment li.documentfragment{ color: red; }.no-fullscreen li.fullscreen{ color: red; }.no-localstorage li.localstorage{ color: red; }.no-svg li.svg{ color: red; }.no-texttrackapi li.texttrackapi{ color: red; }.no-track li.track{ color: red; }.no-todataurljpeg li.todataurljpeg{ color: red; }.no-todataurlpng li.todataurlpng{ color: red; }.no-todataurlwebp li.todataurlwebp{ color: red; }.no-video li.video{ color: red; }.no-websockets li.websockets{ color: red; }.no-setclasses li.setclasses{ color: red; }