My preferred CSS workflow (at least when tweaking existing CSS) is to edit directly in the browser using the 3-panel Inspector panel, then copy the edited styles to my stylesheet.
Sometimes I'll edit the styles for many elements and forget that I edited some element (since you can only see if it's edited AFAICT by selecting exactly that element and looking for rules with a green bar to the left). Then I'll fail to manually copy that element's style changes to my stylesheet and, on reload, lose the changes.
Is there somewhere I can see all the places where I've edited styles using Inspector -- including adding new rules -- so that I can copy them all at once?