*{
	margin: 0px;
	padding: 0px; /*quitar margenes, para que se puedan asignar libremente */
}

body {

	background-color: #fff;
	
}
#contenedor {
	width: 960px;
	margin: auto;
	margin-top: 20px;
	margin-bottom: 20px;
	border-radius: 20px;
	overflow: hidden;
}

header {
	height: 150px;
	background: #fff;

}

header h1 {

	font-size: 50px;
	text-align: center;
	line-height: 150px;

}

nav{

	background: orange;
	height: 60px;
}
nav h2 {
	font-size: 40px;
	text-align: center;
	line-height: 60px;

}

#contenido {
	width: 700px;
	height: 500px;
	float: left;
	background-image: url(logo.jpg);
	background-size: 100%;
	margin-top: 10px;
	margin-right: 10px;
	margin-bottom: 10px;

}

#contenido h2 {
	font-size: 40px;
	text-align: center;
	line-height: 500px;

}
aside {
	width: 250px;
	height: 500px;
	background: green;
	margin-top: 10px;
	float: right;


}

aside h2 {
	font-size: 20px;
	text-align: center;
	line-height: 500px;

}

footer {
	background: blue;
	clear: both;
}

footer h2 {
	font-size: 40px;
	text-align: center;
	padding: 20px;
	font-style: italic;

}