FirefoxCSS-Store

Published theme

FlexFox

A lightweight Firefox userChrome theme designed to optimize screen space without sacrificing accessibility.

Open original repository
Repository
github.com/yuuqilin/FlexFox
Stars
270
Last update
Jul 1, 2026
Submitted as
legacy
FlexFox screenshot

Tags

autohidecustomizableminimalsideberyvertical-tabs

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.