body {
	margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
	background-image: url(../Images/background1.jpg);
	background-repeat: no-repeat;
	background-position: center; 
	background-position: top; 
}
#wrapper{
	height: 100%;
    width: 100%;
    position: relative;
}
#sfondo{
	z-index: 1;
	position: absolute;
	width: 800px;
}
#contenuto{
z-index: 2;
position: relative;
}