Thanks indeed. That was my first try but it would not work.
I was putting it in the Child/style.css but now find that the file is no longer being read by WP.
But when I put it into the CSS+ Rules it did work as predicted.
However…. as you thought it may not be a good idea. It was not, as it dropped the Primary Widget Area on all the post pages too, rather than just the front page. So there was an extra gap there…. and it did not look good.
But now also seeing it in action on the Front Page, I have decided to abandon it. After all, often 85%-100% of our users use phones….. so the desktop reader is a rare breed for us now.
Yep… another good idea that didn’t pan out as hoped 🙂
And no… I’m not going to try and find out why the child/style.css is not found. Things are working and I can use the Customizer if I ever need to add global CSS. I’ll let that sleeping dog lie undisturbed for the time being.