* {
	margin: 0;
	padding: 0;
}

html,
body {
	width: 100%;
	height: 100%;
}
canvas {
	border: 2px solid #000;
	padding-left: 0;
	padding-right: 0;
	margin-left: auto;
	margin-right: auto;
	padding: 0;
	margin: auto;
	display: block;
	width: 800px;
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
}