FirefoxCSS-Store

Published theme

Pseudo-fullscreen Firefox

Hides and improves interface Firefox and YouTube, giving maximum space for content and aiding concentration

Open original repository
Repository
github.com/ongots/pseudo-fullscreen-firefox
Stars
69
Last update
May 5, 2026
Submitted as
legacy
Pseudo-fullscreen Firefox screenshot

Tags

sidebartoolkit

Install overview

  1. Open the original repository and read the maintainer's installation notes.
  2. Enable toolkit.legacyUserProfileCustomizations.stylesheets in about:config.
  3. Create or open the chrome folder in your Firefox profile.
  4. Copy the theme files requested by the original repository and restart Firefox.

Ownership note

FirefoxCSS-Store indexes this submission for discovery. The code, license, support, and installation details belong to the original repository.