html {
    overflow: hidden;
    height: 100%;
    background: #191919;
    width: 100%;
}

#canvas {
    background-image: url("/img/space_sanxvu.jpg");
    width: 100%;
    height: 100%;
    background-size: cover;
}

    #canvas.playing {
        cursor: url("/img/aim_red_j9cyuq.png") 17.5 17.5,auto !important;
    }