Only tested on Unraid 7.2+
This plugin provides a simple, persistent way to inject custom CSS globally into the Unraid WebGUI. Allows you to customize Unraid's WebUI. It is built for Unraid 7.2 and later. (For older Unraid versions <=7.1.4, you can use the more powerful Theme Engine plugin by Skitals)
Note that this plugin is NOT a replacement for Theme Engine, it just provide an textarea to input and store a single CSS file then include it in <head> on every page. You need to manage locally by yourself if you have multiple CSS files to switch.
Navigate to Plugins -> Install Plugin and input this URL:
https://github.com/WuSiYu/unraid-custom-css/raw/refs/heads/master/custom.css.plg
- Navigate to Settings -> Utilities -> Custom WebUI CSS.
- Paste your custom CSS code into the large text field.
- Click Apply & Save.
I also provide my own CSS config as an example (see example.css):

