This new UI drives me nuts. Screen space is precious. All of this stuff should be "movable" to a place the User chooses; the mail bar can't be changed, and Button style: [Icons only] only sort-of works-ish!
Now instead of having a nice, clean interface that makes my work faster, I've got one that slows me down and takes more room! OK, maybe I'm ranting here… a bit.
Can we please:
BTW, the Folder pane header doesn't obey the User setting to only show the icon either. If this stuff can all already be done, please instruct me. I spent over an hour just getting it where it is, including an inordinate amount of time trying to unhide what I hid while checking out what Hide xxx would do, then having to comb the help stuff online to fix my mistake.
Tidy up menu bars, tools, addresses, ....
userChrome.css https://forums.mozfr.org/viewtopic.php?p=944096 can be useful to you
If you don't want to see QuickFilter anymore
https://forums.mozfr.org/viewtopic.php?p=947512#p947512 userChrome.css can be useful to you
You can add the code
Other information to read
Take a look the box Folder panel header