body {
	padding: 0;
	margin: 0;
	overflow: hidden;
	background-color: black;
	text-align: center;
}

canvas {
	display: inline;
	background-color: black;
	width: calc(100vh * 4 / 3);
	/* 100% of viewport width */
	height: 100vh;
	/* 100% of viewport height */
}