.header, .body { width:980px; margin:0px auto; }

.body-layout-left-primary-right .left-column-content { float:left; width:170px; }
.body-layout-left-primary-right .primary-content { margin-left:190px; margin-right:370px; }
.body-layout-left-primary-right .right-column-content { float:right; width:390px; }