Firefox CSS Hacks

A collection of userstyles (CSS hacks) that modify the appearance of Mozilla Firefox. The stylesheets are mostly self-contained and can be mixed, though compatibility with third-party styles is not promised. They are tested only on Windows 10 and to a lesser extent on Linux, and setup involves loading userChrome.css and userContent.css in the Firefox profile.

GitHub repo Directory import
0 shouts Added Sep 23, 2026 github.com
github.com/MrOtherGuy/firefox-csshacks
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Features

  • Stylesheets tested only on Windows 10 and to a lesser amount on Linux Source: github.com

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