Estilos_4.css

/* Reseteo universal */
* {
	border:		0;
	margin:		0;
	padding:	0;
}

article, figcaption, figure, footer, header, hgroup, nav, section {
	display: block;
}


/* estilos del sitio */
body {
	background: #212121 url(../img/Fondo.jpg);
	color: #FFF;
	font-family: Helvetica, Verdana;
	font-size: 1em;
}

a {
	color: #57abb8;
	font-weight: bold;
	text-decoration: none;		/* eliminar linea de la liga */
}

a:hover {
	color: #F60;
}

figcaption {
	font-size: 0.85em;
	padding: 0.25em;
	text-align: center;
}

img, video {
	max-width: 100%;		/* segunda buena practica para el web sensible */
}

header, section#contenido, footer {
	background: #fff; /*url(../img/Fondo.jpg);*/
	margin: 0 auto;
	max-width: 90%;
	text-align: center;
}

header h1, nav {
	display: inline-block;
	max-width: 100%;
	vertical-align: middle;
}

nav ul {
	list-style: none;
}

nav li {
	display: inline-block;
	padding: 0.1em;
	vertical-align: top;
}

nav a {
	background: #fff;
	border: 0.1em solid #57abb8;
	border-radius: 0.25em;
	color: #f60;
	display: block;
	font-family: Helvetica, Verdana;
	font-size: 1.4em;
	padding: 0.2em;
}

nav a:hover {
	background: #212121;
	border: 0.1em dashed #f60;
	border-radius: 0 0.5em 0 0.5em;
	color: #fff;
}