.Gruppo_1 { position: absolute; left: 0px; top: 0px; width: 1200px; height: 1200px; z-index: 12; } .Rettangolo_1 { background-color: rgb(255, 255, 255); box-shadow: 0px 8px 27px 0px rgba(19, 19, 17, 0.42); position: absolute; left: -176px; top: 1041px; width: 649px; height: 394px; z-index: 10; } .Oggetto_vettoriale_avanzato { background-image: url("Oggetto vettoriale avanzato.png"); opacity: 0.702; position: absolute; left: 0px; top: 0px; width: 1200px; height: 961px; z-index: 5; } .Livello_2 { background-image: url("Livello 2.png"); position: absolute; left: -1654px; top: -5px; width: 3114px; height: 1227px; z-index: 3; } .Livello_1 { background-image: url("Livello 1.png"); position: absolute; left: 0px; top: 0px; width: 1200px; height: 1200px; z-index: 2; }