I wanted to share a setup I’ve been using to maintain a clean desktop while using Firefox in fake fullscreen mode. This setup allows Firefox to run fullscreen with auto-hiding tabs and search elements that only show when hovered over, without pushing the webpage content down.

• Install cage, can be found for most distros
• Run and test application -d removes desktop decorations, firefox command ‘firefox -somecommand’ cage 'firefox' -d
• If running correctly edit launch options in de or .desktop file Exec=cage 'firefox' -d then install auto-fullscreen extension

its a long work around especially when its possible to get a similar result from editing about:config but this way the tab and searchbar act as a seperate element meaning no misclicking. if anyone has cleaner solution chime in please.