User blog comment:BertH/Fluid layout is arriving on December 4/@comment-1192804-20131204134019/@comment-452-20131204184957

The split background is controlled by the :before and :after pseudo-elements, so changing body doesn't do anything, unless you also do this: body.background-dynamic.skin-oasis:after, body.background-dynamic.skin-oasis:before { background-image:none; } .background-image-gradient { display: none; }