To infinity and beyond! CaScadeS II will borrow (and extend) a feature from the excellent DOM Inspector: it will not only allow to edit all the stylesheets attached to a document just like the original CaScadeS, but will also allow to edit the rules and inline styles directly responsible for the current presentation of the common element of the seletion in the editor... In other words: select an element, switch to CaScadeS II, select "selection's styles only". That will hide the sheets and rules not responsible for the element's styles:-)