body {
     text-align: center;
     }

div {
    margin: 0 auto;
    }

div#corps {
    width:800px;
    height:400px;
/*    background-color:#FF6699; */
    }

div#sq {
    float:left;
    width:300px;
    height:300px;
/*    background-color:#FF00CC; */
    }

div#rc {
    float:right;
    width:300px;
    height:300px;
/*    background-color:#FFCC00; */
    }