I would like a view that can show all my taxonomy terms that are either the top level, or the 2nd level, but not below that.
In spite of there being a very complicated filter for "Content has taxonomy term with depth X" there is not a more simple one "This term has depth X".
I spent a while today trying to create the simple one based on the more complex one, but I'm not sure I can do it. Posting what I have here as a start for feedback, and so I can return to it later with fresh eyes.
Related drupal issues: * https://www.drupal.org/node/903438 * https://www.drupal.org/node/1073170 * https://www.drupal.org/node/1216006
Recent comments
You can use this module: https://backdropcms.org/project/search_api_block
Search Api form in header?
Have you looked at the BG Image Formatter https://github.com/backdrop-contrib/bg_image_formatter
How to access node fields in block template files
You could also try Current Content Display Block which with a bit of config and CSS could get you what you need.
How to access node fields in block template files