body {
	font-family: "Arial Narrow", sans-serif;
	padding: 0.5em 3em;
}

h1 {
	font-size: 1.5em;
}

#input {
	width: 100%;
	height: 20vh;
}

#output {
	border-collapse: collapse;
	width: 100%;
	height: 50vh;
}

#output td {
	border: 1px solid black;
	vertical-align: top;
	font-size: 1.5vw;
}

.filled {
	background-color: black;
}