Hi

Alternatively, you can place all the add-ons in a single column and use CSS to create any grid layout. This method is more manageable and flexible. However, it requires CSS knowledge.

1. Und background color set for Columns and Addons, the same with border-radius value.
2. Heading addon has option to use Icon (also Arrow) in Title, so you can try use that, or by Custom CSS.

Thanks Pavel, again :)