body{
	background-color: #FFFFFF;
}

#contenedor{
	z-index:1;
	margin: 0 auto 0 auto;
	margin-left: -450px;
	margin-top: -278px;
	position: absolute;
	width:900px;
	height:555px;
	top: 50%;
	left: 50%;
	z-index:1;
	overflow: hidden;
}

#contenido { 
	z-index:2;
	margin-top:0px;
	margin-left:0px;
}