body {
    background: white none;
}
#game {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}
#canvas {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
}