body
{
width:900px;
margin:0 auto;
background-color:#E9E9E9;
}
#todo 
{
position:relative;
left:0px;
top:10px;
width:100%;
height:500px;
border: 2px solid #000000;
}
	#encabezado
	{
	position:absolute;
	left:0px;
	top:0px;
	width:100%;
	height:100px;
	background-image:url(encabezado.JPG);
	background-repeat:repeat-x;
	}
	#contenido
	{
	position:absolute;
	left:0px;
	top:95px;
	width:100%;
	height:405px;
	background-image:url(fondo.JPG);
	background-repeat:repeat-x;
	}