The file has the correct format for review, applies cleanly, and tests pass.  The relief is gone (easy).  The buttons are no longer symmetrical; this looks 'wrong' to me.  (My reaction might be different if the widget was much wider, so the buttons were clearly right-justified rather than looking like their placement had a bug.)  This results from using 3 columns instead of 2.  I want to try the latter.   I will switch error messages to the widget, see what happens, and deal with needed test changes.  I will post before committing so you can test on Mac first.