* {
		margin: 0;
		padding: 0;
	}

	html, 
	body {
		height: 100%;
		position: relative;
		width: 100%;
	}

	body {
		background: #eee;
	}

	canvas {
		background: white;
		display: block;
	}

	#c {
		left: 50%;
		position: absolute;
		top: 50%;
		transform: translate(-50%, -50%);
	}