The only way to modify ui is by adding custom CSS code to userChrome.css and userContent.css files inside the browser's profile folder. The only way to modify UI is by adding custom CSS code to userChrome.css and userContent.css files inside the browser's profile folder. Keep in mind that CSS code can not create entirely new items, buttons, or toolbars. It only can modify already present UI items. Keep in mind CSS code can not create entirely new items, buttons, or toolbars. It only can modify already present UI items. Edit userChrome.css and userContent.css with any text editor (Notepad++ recommended on Windows) and enable or disable any feature you like by modifying, removing, or out-commenting available import strings. Open CSS files with a text editor. Look through the code and change values the way you need. Some files contain additional instructions about how to tweak the UI for individual cases.

Features

  • Unlock custom CSS usage
  • Custom JavaScript for Firefox
  • WebExtensions can not modify Firefox appearance properly
  • Find item ids and attributes
  • Use custom user styles
  • Modify custom user styles

Project Samples

CustomCSSforFx Screenshot 1

Project Activity

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Categories

Browser Extensions and Plugins

License

MIT License

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Additional Project Details

Registered

2022-11-08
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