body{background-color:#000}#gameWindow{position:relative;width:500px;height:300px;margin:0 auto;background-color:#fff;overflow:hidden;cursor:url(crosshair.gif) 16 16,crosshair}.monkey{position: absolute;z-index: 10;width: 80px;height: 80px;background: url('monkey.png');background-size: 80px 80px;}