Generate and add site specific CSS classes and ids to the body tag
So we can style specific categories, pages like lets say when we browse products in the category Ferrari, the website has a red theme (add the "Ferrari" class to the body tag and address it in the css code).
Also for all other sites in oxid (basket, user, cms sites, checkout process ...)
AdminRay (Admin, OXID) commented
as explained here in forums: