.block_bottom
{
  margin-top:35px;
  width:920px;
  height:170px;

}

.block_right
{
  width:430px;
  height:150px;
  margin-right: 20px;
  margin-left: 10px;
  margin-top:10px;
  background: url(../Images/occasion.png) no-repeat scroll top left;
  display:block;
  position:relative;
  float:right;
  
}
.block_right a
{
  background: url(../Images/occasion.png) no-repeat scroll top left;;
  display:block;
  height:150px;
  position:relative;
}
.block_right a.tract {
width:430px;
}
}
.block_right span {
background:url(../Images/occasion.png) no-repeat scroll bottom left;
display:block;
position:absolute;
top:0;
left:0;
height:100%;
width:100%;
z-index:100;
}

.block_right span {
background-position:0px -150px;
}

.block_left
{
  width:430px;
  height:150px;
  margin-right: 20px;
  margin-left: 10px;
  margin-top:10px;
  background: url(../Images/produit.png) no-repeat scroll top left;
  display:block;
  position:relative;
  float:left;
  
}
.block_left a
{
  background: url(../Images/produit.png) no-repeat scroll top left;;
  display:block;
  height:150px;
  position:relative;
}
.block_right a.mois {
width:430px;
}
.block_left span {
background:url(../Images/produit.png) no-repeat scroll bottom left;
display:block;
position:absolute;
top:0;
left:0;
height:100%;
width:100%;
z-index:100;
}

.block_left span {
background-position:0px -150px;
}