body.basic #content{width:600px;margin:0 auto}.grid-a #content{float:left;width:58.3%}.grid-a #extra{float:right;width:39.6%}.grid-b #sidebar{float:left;width:20.8%}.grid-b #content{float:right;width:77.1%}.grid-c #sidebar{float:left;width:20.8%;margin-right:20px}.grid-c #content{float:left;width:58.4%}.grid-c #extra{float:right;width:16.65%}.grid-d #content{float:left;width:81.35%}.grid-d #extra{float:right;width:16.7%}.grid-e #content{float:left;width:77%}.grid-e #extra{float:right;width:20.85%}.grid-f #content{float:left;width:66.5%}.grid-f #extra{float:right;width:31.25%}