html, body, #screen {
	margin: 0;
	padding: 0;
	width: 100%;
	height: 100%;
}

body {
	position: absolute;
	background-color: black;
}

.error-box {
	position: relative;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);

	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;

	width: 17em;
	height: 5em;
	border: 3px double white;
	color: white;
	font: 16px Monospace;
}

#screen {
	position: absolute;
	top: 0;
	left: 0;
}