html,body {
	margin: 0;
	padding: 0;
	background-color: black;
}

main {
	text-align: center;
	width: 100%;
}

canvas {
  display: block;
	margin: auto;
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
}