body {
	background: #171D2F;
	color: #A1B3D1;
	background-image: url(../img/background_index.jpg);
	background-position: center;
	background-position: center;
	background-repeat: no-repeat;
	background-attachment: fixed;
	overflow:auto;
	margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
}
#centrado{
   position: absolute;
   left: 50%;
   top: 50%;
   width: 974px;
   height: 290px;
   margin-left: -487px;
   margin-top: -150px;
	text-align: center;
}