body {
	background-image: url(background/fondo.jpg);
	background-position: center center;
	text-align: center;
	vertical-align: middle;
	background-color: #E4E5D7;
}
.fondo_contenido {
	background-image: url(background/fondo_contenido.jpg);
	background-repeat: no-repeat;
	background-position: center center;
}