html, body {
	display:table;
	width:100%;
	height:100%;
	margin:0;
	padding:0;
	background-color:#222;
}

body {
	display:table-cell;
	vertical-align:middle
}

canvas {
	display:block;
	margin:0 auto;
	image-rendering:pixelated;
	-webkit-box-shadow:0 2px 5px rgba(0,0,0,0.3);
}