html, body, article {
	width: 100%;
	height: 100%;
}
body {
	background-color: #222;
	color: #fff;
	font: 13px sans-serif;
	background-size: cover;
}
article {
  display: box;
  box-orient: horizontal;
  box-pack: center;
  box-align: center;
  font-weight: bold;
  font-size: 1.2em;
}