html,
body {
	margin: 0;
	padding: 0;
}
body {
	position: relative;
	width: 100%;
	height: 100%;
}
div {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
}
h1 {
	font-family: Verdana, Geneva, Tahoma, sans-serif;
	color: #fff;
}
canvas {
	display: block;
	z-index: -9999;
}