html, body {
	height: 100%;
	color: #AAA;
	background: #333;
	font: 18px normal Arial, Helvetica, Sans-serif;
	margin: 0;
	padding: 0;
}

h1 {
	font-size: 3em;
}

strong {
	color: #FFF;
}

#principal {
	position: relative;
	background: #000;
	height: 100%;
	width: 960px;
	margin: 0 auto;
}