html, body {
	margin: 0;
	padding: 0;
	background-color: #333;
	color: #fff;
	height: 100%;
}

body.vh {
	font-size: 1vh;
}
body.vw {
	font-size: 1vw;
}

body {
	display: flex;
	justify-content: center;
	align-items: center;
}

#game {
	background-color: #000;
	width: 90em;
	height: 90em;
	border: 2em solid #666;
	border-radius: 2em;
	box-shadow: 0 0 4px 0 #000;
	position: relative;
	/*image-rendering: pixelated;*/
}