html,body{	margin: 0;	padding: 0;	background: #000;	width: 100%;	height: 100%;	overflow: hidden;	-webkit-touch-callout: none;	-webkit-user-select: none;	-khtml-user-select: none;	-moz-user-select: -moz-none;	-ms-user-select: none;	user-select: none;	background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAYAAACp8Z5+AAAAJ0lEQVQIW2MUERH5zwAFb968YWCECYA4QDZEAMYBKWQE4v8gGRgAACHyDbUYyktgAAAAAElFTkSuQmCC) repeat;}canvas{	width: 800px;	height: 480px;	position: absolute;	top: 48px;	left: 50%;	margin: 0 -400px;}#description{	width: 800px;	position: absolute;	top: 568px;	left: 50%;	margin: 0 -400px;	color: white;	text-align: center;}