People ragging on the only viable browser solution we have... Firefox is rock solid, fast, tweakable, and keeps me as safe as any browser and my configs/habits can. I don't care if management eats babies.
I use it on debian with celenity phoenix and a few about:config tweaks, also tweak'd the theme a bit. Extensions: ublock origin, sponsorblock, localcdn, consent-o-matic, containers, keepassxc-browser, and sometimes jshelter.
web browsing: solved
My issue is that the theme tweaking is limited even after changing the settings in about:config. I have been trying to set up a retro theme for Firefox, something like Netscape, but the proton style seems to be fairly hard coded into the Firefox appearance. I wish they would make Firefox more visually customize able. The best looking browser I have found that matches my setup is pale moon, but it is slow and doesn't load websites properly.
Although I will agree that Firefox is the best browser outside of looks.
you can customize every aspect of its appearance using userChrome.css; it's not hardcoded at all.
The theme I am using is coded using chrome.css, but the proton tab style and border style won't change.
is it a theme you wrote or one you downloaded? if it's the latter then it probably just wasn't updated to reflect those changes. the tab styling isn't hard-coded either, but it has undergone changes in recent updates and as a result broke some themes.
I downloaded the files so it could just be old. The themes were made in 2021 it seems. I do want to say thank you for trying to help with this. I'm gonna use the link you sent to see if I can figure it out.
best of luck! here are some other links you might find useful: