@charset "utf-8";
.head {
	height: 120px;
	width: 780px;
	float: left;
}
.box_contenido {
	float: left;
	height: auto;
	width: 780px;
	z-index: 1;
	position: relative;
}

.pie {
	float: left;
	width: 780px;
	height: 25px;
	background-color: #31498F;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 11px;
	color: #FFFFFF;
}
.back_down {
	background-image: url(../img/back_down.jpg);
	background-repeat: no-repeat;
	background-position: center;
}