Personally I've just given up trying with firefox and I now put up with brave - its certainly not perfect but at least the ad blocker isnt about to break.
[0]: https://developer.chrome.com/docs/web-platform/document-pict...
[1]: https://developer.chrome.com/docs/web-platform/element-captu...
And that automatically disqualifies it? I find that wild. I've been using Firefox since it was at v2 I think, and never once considered switching for some speed gain. I actually use Vivaldi on the side sometimes for sites that aren't very Firefox-with-my-extensions-friendly, and find no difference in performance.
(Personally I find Firefox is plenty fast! And the benefits vastly outweigh trying to deal with a Google-powered web browser.)
This is no longer the case, at least not uniformly. My Speedometer 3.1 results are:
- Chromium: 30.0 (± 1.2)
- Firefox: 32.1 (± 1.6)
Using the latest browser version on Arch Linux.
IIRC, it's got a much smaller memory footprint.
You can start with this page[4] for an examples of simple, but elegant styling.
And /r/FirefoxCSS can demonstrate all kinds of crazy options userChome.css enthusiasts can come up with.
[1] https://www.userchrome.org/
[2] https://kb.mozillazine.org/index.php?title=UserChrome.css
[3] https://old.reddit.com/r/FirefoxCSS/wiki/index/tutorials
[4] https://www.userchrome.org/firefox-89-styling-proton-ui.html...