@charset "utf-8";
.caja {
	width:80%;
	margin-left:auto;
	margin-right:auto;
	font-family: Arial;
}
.caja header {
	background-color: LightGray;
	text-align:center;
	margin-bottom:0.2em;
}
h1 {
	font-size: 34px; 
	margin:0.2em;
}
nav ul {
	list-style-type:none;
	margin:0;
	padding:0;
	margin-bottom:0.2em;
	display:flex;
	flex-direction: row;
}
nav li { flex-grow: 1; }
nav a {
	font-size:18px;
	font-family:Arial;
	display:block;
	padding:1em;
	background-color:LightGray;
	text-align:center;
	margin-right:0.2em;
	text-decoration:none;
	color:#000000;
}
nav a:hover {
	background-color:LightCoral; 
}
footer {
	background-color:LightGray;
}
.contenido {
	margin-left:auto;
	margin-right:auto;
	margin-bottom:0.2em;
	/**display:flex;
	flex-direction: row;**/
}
article {
	background-color:LightGray;
	flex-basis: 70%
}
aside {
	background-color:LightGray;
	flex-basis: 30%;
	margin-left:0.2em;
}