.s{
    overflow:hidden;
}
.center_container{
    width: 980px;
    margin: 0 auto;
    margin-top: 7px;
}
.right-col{
    width: 655px;
    float: left;
    margin-left: 7px;
}
.left-col{
    width: 306px;
    margin-left: 666px;
}