html,
body {
	background-color: #7f724c;
	margin: 0;
	padding: 0;

	div {
		width: 100%;
		height: 100vh;
		position: relative;
	}

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