html, body {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
}
body {
	background: #000 url('stars.svg') center center repeat;
	background-size: contain;
	color: #fff;
	font-family: 'Courier New', 'Courier', monospace;
	font-size: 10px;
	overflow: hidden;
}
main {
	display: flex;
	flex-direction: row;
	align-items: center;
	justify-content: center;
	width: 100%;
	height: 100%;
}
pre {
	background: #000;
}
footer {
	position: absolute;
	right: 1em;
	bottom: 1em;
	font-size: 14px;
	background: #000;
	padding: 0.5em;
}