html { 
	height: 100%;
	overflow: hidden;
}

body {
	background-color: #fff;
	font-family: "Courier New", Courier, monospace;
	font-size: medium;
}

h1 {
	text-align: center;
	font-size: 200%;
}

canvas {
	display: block;
	margin-left: auto;
	margin-right: auto;
	border: thin solid #000;
}

#header {
	text-align: center;
}

#mainContent {
	text-align: center;
}

#footer {
	text-align: center;
}