A Material Design-inspired userChrome.css theme for Firefox
This theme is powered by blood, sweat, and coffee. If you like it, please consider helping out to support its continued development.
Inspired by Google's Material Design and their latest Google Chrome UI, this theme turns your Firefox into a Material-styled web browser. The aim was to style the browser as closely as possible to Google Chrome, where practical.
This is a userChrome.css theme, which means you must manually add it to your Firefox profile. The theme overrides certain browser styles. Currently, only the main UI is affected (settings pages, etc. are not). More elements of the UI may be styled in the future but a broader scope becomes harder to maintain as Mozilla updates their browser code so some UI styles may be culled or redone if they become unmaintainable.
Check the releases section. Each release version will match the compatible Firefox version. For example, if you're using Firefox 88, try a v88.x release. If there's no matching release and you're not using an old version of Firefox, go for the latest one. If you're using a beta version of Firefox, you might want to try the master branch, which will have the latest bug fixes.
Add space above tab bar:
Replicate Chrome behaviour for clipped tabs:
Replicate Chrome's "Not Secure" text on HTTP: