# userChrome.css Thanks to the userChrome.css, you can customize Firefox's chrome! And even though [this is considered _legacy_](https://www.userchrome.org/how-create-userchrome-css.html#aboutconfig), it's still an amazing way to improve the UI of Firefox. You can read more about userChrome.css at [www.userChrome.org](https://www.userchrome.org/). ## Changes This userChrome.css changes the following: - Spacing of context menus - Height of tabs - Margins of the bookmark list - Margins of identity boxes This userChrome.css is fully compatible with [Firefox Color](https://color.firefox.com). ## Installation Follow this guide: [How to Create a userChrome.css File](https://www.userchrome.org/how-create-userchrome-css.html). ## Thanks Thank you to [userChrome.org](https://www.userchrome.org/) for their resources and guides!