body {
	display: flex;
	flex-direction: column;
	height: 100vh;
	margin: 0;
	padding: 0;

	background: darkslateblue;
	color: lightblue;
	text-align: center;
}
header {
	background: black;
}
main {
	display: flex;
	flex-direction: column;
	flex-grow: 1;
	justify-content: center;
}
main p {
	padding: 2em;
	margin: auto;

	background: black;
	font-size: larger;
}