When I add a class to a Radio filter element > Button, I am unable to style the background colour (although the ‘Active’ background colour works) on my mobile base breakpoint.
As soon as I style at ID level on my mobile base breakpoint, it works fine.
I’ve noticed that the Taxonomy element using the .bricks-button class but, with this element, you can change the padding and background colour using the UI (you cannot however change the gap).
We’ve fixed this issue in Bricks 1.10, now available as a one-click update in your WordPress Dashboard.
You can see the full changelog here: Bricks 1.10 Changelog – Bricks
Please let us know if you are still experiencing issues.