html {
    width: 100%;
    height: 100%;
}

body {
    width: 100%;
    min-height: 100%;
    margin: 0 auto;
    padding: 0;
    image-rendering: optimizeSpeed; /* Older versions of FF */
    image-rendering: -moz-crisp-edges; /* FF 6.0+ */
    image-rendering: -o-crisp-edges; /* OS X & Windows Opera (12.02+) */
    -ms-interpolation-mode: nearest-neighbor; /* IE (non standard naming) */
    image-rendering: pixelated; /* Chrome 41 */
    background-size: 100% auto;
    overflow: hidden;
    position: relative;
    pointer-events: auto;
}