html,body {
	margin: 0;
	padding: 0;
	background: #222;
}
main {
	text-align: center;
	width: 100%;
}
canvas {
	display: block;
}
main {
	align-items: center;
	display: flex;
	height: 100vh;
	justify-content: center;
}
main canvas {
	height: auto !important;
	width: auto !important;
	max-width: 100%;
	max-height: 100%;
	display: inline-block;
	margin: 0 auto;
	vertical-align: middle;
	horiz-align: center;
	touch-action: none;
}