• Background Video

    <video autoplay loop poster="polina.jpg" id="bgvid">
    <source src="polina.webm" type="video/webm">
    <source src="polina.mp4" type="video/mp4">
    </video>

    video#bgvid {
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -100;
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    background: url(polina.jpg) no-repeat;
    background-size: cover;
    }

    @media screen and (max-device-width: 800px) {
    body { background: url(polina.jpg) #000 no-repeat center center fixed; }
    #bgvid { display: none; }
    }

    http://demosthenes.info/blog/777/Create-Fullscreen-HTML5-Page-Background-Video


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