body, canvas {
	margin: 0;
	padding: 0;
	overflow: hidden;
	background: #000;
	color: #fff;
	font-family: Tahoma;
}

#intro {
	position: absolute;
	top: 40px;
	left: 0;
	right: 0;
	bottom: 0;
	padding: 10px;
	background: #000;
	color: #ddd;
}

#intro h1 {
	font-size: 20px;
}

#intro button {
	margin: 5px;
	padding: 20px;
	width: 200px;
	font-size: 20px;
	background: #000;
	color: #ccc;
	border: 1px solid #ccc;
	border-radius: 5px;
}