#bloc1_de_body{
height:20px;
width:100px;
background-color: red;
position:absolute;
top: 30px;
left: 60px;
}
#bloc2_de_body{
width:200px;
background-color: yellow;
position:absolute;
bottom: 30px;
right: 200px;
z-index:1;
}
#bloc3_de_body{
height:40px;
width:600px;
background-color: blue;
position:absolute;
bottom: 30px;
left: 60px;
}
