* {
	padding: 0;
	margin: 0;
}
html, body {
	width: 100%;
	height: 100%;
	overflow: hidden;
	background-color: black;
}
canvas {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
}
@media all and (max-width: 800px) {
	canvas {
		transform: translate(-50%, -50%) scale(0.5);
	}
}