body {
    background-image: url(../phpimages/ImagenCot.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 100% top;
    background-attachment: fixed;
}
 
 .fondoRojo{
	background-color: #700405;
 	color:#FFFFFF;
 	text-align:center;
 	margin-right:500px
 }
 
.fondoBlanco{
	background-color:#FFFFFF;
	text-align:left;
	border-color:#000000;
	color:#000000;
 }
 
 .derecha{
 	margin-right:-500px
 }