body{
	margin:0;
	font-family: Helvetica, Arial, sans-serif;
	font-size: 22px;
	font-weight: 100;
	line-height: 1.7em;
}

article > p, article > ul{
	width: 640px;
	margin:1em auto;
}
.section{
	width:100%;
	background: #000;
	color: #fff;
	overflow: hidden;
	padding: 1em 0;
	margin-bottom: 2em;
	margin-top: 3em;
}
.section:first-of-type{
	margin-top: 0;
}
.section > div{
	width: 800px;
	margin:1em auto;
}

.sim{
	width:100%;
	background: #eee;
	overflow: hidden;
	margin: 1.5em 0;
}
iframe{
	border:2px solid #eee;
	display: block;
	margin:0 auto;
}