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

.sonic {	
width: 48%;
left: 0;
top: 0;
position: absolute;
}
.strada {
width: 70%;
left: 0%;
top: 4vh;
position: absolute;
}
.nosignal {
width: 31%;
top: 39vh;
left: 36%;
position: absolute;
}
.skate {
width: 31%;
top: 47vh;
left: 30%;
position: absolute;
}
.calzino {
width: 22%;
left: 4%;
top: 17vh;
position: absolute;
}
.bottiglia {
width: 22%;
left: 72%;
top: 3vh;
position: absolute;
}
.next{
width: 12%;
top: 72vh;
left: 87%;
position: absolute;
}