*{
	margin:0;
	padding: :0;
}
#contenedor{
	width: 1200px;
	height:1000px;
	margin: 0.5em auto;
	padding: 0.5em;
}
#header{
	font-family: arial;
	font-size: 24px;
	text-align: center;
	height: 15%;
	background: #a4a4a4;
	border-radius:1em;
	margin:1em;
}
#nav{
	font-family: arial;
	font-size: 24px;
	text-align: center;
	height: 10%;
	background:#424242;
	border-radius: 1em;
	margin: 1em;
}
#contenido{
	height: 53%;
	margin: 1em;
}
	#footer{
	font-family: arial;
	font-size: 24px;
	text-align: center;
	height: 15%;
	background:#424242;
	border-radius: 1em;
	margin: 1em;
}
#section{
	font-family: arial;
	font-size: 18px;
	text-align: center;
	height:95%;
	width:71%;
	background:#a4a4a4;
	border-radius: 1em;
	float:left;
	margin: 0.5em;
}
#aside{
	font-family: arial;
	font-size: 18px;
	text-align: center;
	height: 95%;
	width: 25%;
	background:#a4a4a4;
	border-radius: 1em;
	float:right;
	margin: 0.5em;
}
.articulo{
	font-family: arial;
	font-size: 18px;
	text-align: center;
	width: 96%;
	height: 85%;
	background: #424242;
	margin:1em;
	border-radius: 1em;
}
#nav ul {
	list-style-type:none;
	margin:0.5;
	padding:0.2;
	margin-bottom:0.8em;
	display:flex;
	flex-direction: row;
}
#nav li { flex-grow: 20; }
#nav a {
	font-family: arial;
	display:block;
	padding:1em;
	background-color:Gray;
	text-align:center;
	margin-right:0.2em;
	text-decoration:none;
	color:#000000;