I never heard of tabs on the bottom. I don’t think I would like that.
firefox is essentially irrelevant as a browser now:
“As of March 2025, Mozilla Firefox holds a 2.57% market share across all platforms, with 0.53% coming from mobile devices, according to Backlinko.”
their management kept ignoring the desires of their users until there were no more users ... a lot like the Democrat Party ...
https://support.mozilla.org/en-US/questions/925973
type or paste about:config in the address bar and press Enter. Click the button promising to be careful.
(2) In the filter box, type or paste tabs and pause while the list is filtered
(3) [At end] Double-click browser.tabs.onTop to switch it from true to false to move the tabs below the toolbars.