i have used this same file before and same browser but its not loading. i checked settings in librewolf to make sure i had css enabled. but it still wont load.
i have file located at ~/.config/librewolf/librewolf/12345. default-default/chrome/userchrome.css

Not using LW, but in FF there’s an about.config. item called ‘toolkit.legacyUserProfileCustomizations.stylesheets’ that has to manually turned to ‘true’ to work.
I don’t like the FF setup (userChrome levels buried deep in the .mozilla folder), must be nice to have it handier like that.
The same path should work in Firefox, just with
mozilla/firefox/instead oflibrewolf/librewolf/.Or are you surprised by it being stored under
~/.config/? That’s a quite recent change: https://lemmy.ml/post/39240208