A new user to Backdrop asked the following question in Gitter today, it seems like a question that other might have, so I'm posting it here in the forum.
"Using the Backdrop default theme and need to make CSS changes. (Menus are HUGE, hero block has more padding than the presidential bank account.) Spelunking through inspector properties and CSS files, it appears some are programmatically generated, and I have no idea where to make edits. Help?"
Comments
Replies in Gitter (and links to various resources below)
User guide section about themes:
https://backdropcms.org/user-guide/themes
Here is an article from BackdropCMS.org on porting themes:
https://api.backdropcms.org/converting-themes
You can post a port request for a theme or a module here:
https://github.com/backdrop-ops/contrib/issues
Here are some links to previous forum topics that might help you get started:
https://forum.backdropcms.org/forum/themes-questions-new-user
https://forum.backdropcms.org/forum/themes-and-layouts-confusion
https://forum.backdropcms.org/forum/how-create-backdrop-theme-acquia-marina-d6
A spreadsheet to help compare contrib themes (info is dated).
Videos:
https://youtu.be/x8JeTzaC98A
https://youtu.be/H3XOrXh6cMg
(Google Doc w/ notes)
https://youtu.be/iPplQfwq8BU
https://youtu.be/_zFfLvRYKV4
https://youtu.be/eVtaRb7FEVY
https://youtu.be/iYdRfKMplHQ
If you just want to make some minor changes to the CSS through the user interface, you might be interested in the CSS Injector module.
Please, post any follow up questions here and we'll try to help out.
Also - I'm working on a new contrib theme call Tatsu for Backdrop that fixes a lot of the small problems/frustrations I have with Basis. It's still not finished, but I'd love for folks to try it out and let me know what else it needs.
Theme: https://backdropcms.org/project/tatsu
Dev version is better: https://github.com/backdrop-contrib/tatsu
Blog post: https://www.triplo.co/blog/new-contrib-theme-backdrop-cms-tatsu
Feedback: https://github.com/backdrop-contrib/tatsu/issues/47
I'm the new user in question and just came by to post the same thing—thanks for beating me to it!