"Proper" way to modify CSS?


  • Used Zammad version: 5.2.3
  • Used Zammad installation type: package
  • Operating system: AlmaLinux
  • Browser + version: Edge 106.0.13

Please can you point me in the right direction for any documentation about modifying the self-hosted version? Specifically, I am looking to adjust the frontend CSS font styles and colors, so I am looking for some information on which files are safe to modify without causing issues during updates. From looking around the forums I’ve seen a few posts that are specific to certain user’s needs but have not yet found any general guidance on how modifications are handled during updates or whether I need to adjust the existing CSS or if there’s a way to keep my modifications in a separate file which is applied on top of the base code

Add css files to /opt/zammad/app/assets/stylesheets/custom/

Then run
zammad run rake assets:precompile
systemctl restart zammad-web

Files in that directory have survived updates so far.


Thanks so much I will give that a go and see how we get on. I did see this response on another post but it was for a much older version so I wasn’t sure if it was still valid.

Would you recommend we add “!important” to the selectors to override the default ones or will it automatically override?

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