html{
	height: 100%;
	width: 100%;
	background:url('../images/wpaper-sergio.jpg') no-repeat left center fixed;
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
	filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../images/wpaper-sergio.jpg', sizingMethod='scale');
	-ms-filter: "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../images/wpaper-sergio.jpg', sizingMethod='scale')";
}