body {
	background:#E6E6E6;
	width:90%;
	max-width:1000px;
	margin:auto;
}

header {
	width:100%;
	max-width:1000px;
	margin:auto;
	position:fixed;
	z-index:100;
}

nav {
	background:rgba(82,143,213,0.9);
	margin-top:20px;
	position:relative;
}

nav ul {
	list-style:none;
	padding:0;
	margin:0;
	overflow:hidden;
}

nav > ul > li {
	float:left;
}

nav ul li a {
	font-family:'Arial',sans-serif; 
	text-align:center; 
	font-weight:100;
	text-decoration:none;
	color:#fff;
	display:block;
	padding:10px 20px;
}

nav ul li a:hover {
	background:#3669A3;
	color:#fff;
}


.contenido-wrapper { 
	font-family: 'Roboto', sans-serif; 
	font-size: 16px; 
	font-weight: 300;
	padding-top: 40px; 
}