html,
body {
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 0;
	overflow: hidden;
	background: #000;
}

canvas {
	max-height: 100dvh;
	max-width: 100dvw;
	aspect-ratio: 4/3;
	background: #000;
	touch-action: none;
}