<style> 

  #stilo{
  }
  
   body {
	background-repeat: repeat-x;
	margin-top: 0;
	margin:0;
	padding:0;
	text-align:center;
	background-image: url(../imagenes/fondo%20pagina.png);
   } 

   #sombra{
	text-align:center;
	margin:auto;
	width:820px;
	height:810px;
	background-image: url(../imagenes/sombra%20pagina.png);
   }
   
   #contenedor {
	margin:auto;
	text-align:center;
	width:800px;
	height:800px;
	background-color: #000000;
   } 
   
   #cabecera {
	width: 800px;
	height:175px;
	background-color: #000000;
	z-index: 4;
	position: relative;
   } 
   
   #menu {
	width: 800px;
	height:25px;
	float: left;
	background-image: url(../imagenes/botones_del_menu/barra_menu.png);
	z-index: 3;
	position: relative;
   } 
   
   #contenido {
	width:800px;
	height:550px;
	float: left;
	background-color:#000000;
	z-index: 2;
	position: relative;
   } 

   #pie {
	clear:both;
	width:800px;
	height:50px;
	background-image: url(../imagenes/barra%20pie.png);
	z-index: 1
	position: relative;
   } 
</style> 