body {
	padding: 0;
	margin: 0;	
}

canvas {
	position:fixed;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	-ms-touch-action: none; /* Disables all pan/zoom behaviors and fire pointer events in JavaScript instead. */
}

#back {
	position:fixed;
	bottom: .2em;
	left: .2em;
}

#back>a, #back>a:active, #back>a:visited {
	color:black;
	text-decoration: none;
}