*{
  padding:0;
  margin:0;
}

.cont{
height:83px;
width:110px;
margin:auto;
margin-top:10px;
padding-top:20px;
background:url('grande1.png') no-repeat;
text-align:center;
}

.cont:hover{
background:url('grande2.png') no-repeat;
}


.contlungo{
height:60px;
width:280px;
margin:auto;
margin-top:10px;
padding-top:20px;
background:url('lungo1.gif') no-repeat;
text-align:center;
}

.contlungo:hover{
background:url('lungo2.gif') no-repeat;
}


.smallcont{
height:45px;
width:60px;
margin:auto;
margin-top:10px;
padding-top:20px;
background:url('piccola1.png') no-repeat;
text-align:center;
background-position: 50% 50%
}

.smallcont:hover{
background:url('piccola2.png') no-repeat;
background-position: 50% 50%
}