#celle
{
position: relative; 
}
#celle1
{
position: relative; 
width: 550px; 
height: 20px;
margin: 0 0 10px 0;
border: 3;
}
.cornice{
background-image:url('barrettasopragiulia.jpg');
height:40px;
background-position:center;
}
.cornice1{
background-image:url('barrettasotto.jpg');
height: 40px;
background-position:center;
}