.center {
	display: block;
	/*margin-left: auto;
	margin-right: auto;
	width: 50%;*/
}
.top {
	position: absolute;
	top: 0px;		
}

.contenuto {	
height:100vh;
width:100%;
position: absolute;
}
.next{
width: 12%;
top: 72vh;
left: 87%;
position: absolute;
}