Jeez, sorry for wasting your time on this!!….I need to be more thorough! I see it working now. That part of the custom.css has been there for a few months and when I have tried to add other custom css they didn’t work so I just tried other workarounds instead…or gave up…but NEVER touched the parent theme!
All I can say is I learned something from this….many thanks for your time.
On another point I would just like to give a big thumbs up for the new Support site!