body {
	background-color: #FFFFFF;
}

div {
	position: absolute;
	background-repeat: no-repeat;
}

div#mamma {
	top: 50%;
	left: 50%;
	z-index: 1 ;

	width: 748px;
	height: 580px;

	margin-left: -374px;
	margin-top: -290px;

    border: 1px solid #ff0000;
}

div#intro {
	top: 50%;
	left: 50%;
	z-index: 1 ;

	width: 748px;
	height: 560px;

	margin-left: -374px;
	margin-top: -280px;
	cursor: pointer;
}