body {
    background-color: #000;
	color: #aaa;
}

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

#mainCanvas {
	visibility: hidden;
}

#subCanvas {
    visibility: hidden;
}