body {
	display: grid;
	grid-template-columns: 1fr;
	grid-template-rows: auto 1fr auto;
	grid-template-areas: "header"
						 "main"
						 "footer";
	min-height: 100vh;
}

header {
	padding: 0.5em;
	background-color: WhiteSmoke;
}

header a  {
	text-decoration: none;
}

header img {
	height: 1em;
	margin-left: 1em;
}

main {
	display: flex;
	background-color: DimGray;
}

main div {
	margin: auto;
	font-family: Courier New, Courier, Lucida Sans Typewriter, Lucida Typewriter, monospace; 
	font-size: 15vw;
	color: Silver;
}

footer {
	padding: 0.5em;
	background-color:  WhiteSmoke;
	font-family: Trebuchet MS, Lucida Grande, Lucida Sans Unicode, Lucida Sans, Tahoma, sans-serif; 
	font-size: 0.75em;
	text-align: right;
}