userchrome-css

A userChrome.css theme to bring Arc Browser look on Windows to Firefox. Work with Windows, Linux and macOS ✨

A minimalistic one-line userChrome.css theme for Firefox

A calm, tidy design for Thunderbird on macOS, with colourful spaces, message cards and a clear calendar.

A Betterbird / Thunderbird modding suite to bring back some of the UI and functionality of Postbox

A custom firefox css theme

Firefox userChrome.css to auto-hide the tab bar when it only contains a single tab

UserChromeJS/userChrome.css package that adds a Firefox toolbar button to auto-hide browser toolbars, with Ctrl+F11 shortcut and Tools menu entry.

Makes firefox transparent with colored tint

Pywal colors for Zen Browser. Sidebar, tabs, background and URL bar follow your wallpaper live, no restart. Works with Pywalfox

Min Firefox - browse without distractions

High-contrast read & unread email styling for Mozilla Thunderbird Supernova (Cards & Table view) via userChrome.css. Dark mode ready.

Auto-hide Firefox's top toolbars like Vivaldi's UI Auto-hide (userChrome.css + experimental extension)

A real-progress loading bar for Firefox's address bar, like Chromium/Helium's: follows actual page load progress, with a breathing glow. userChrome.css + autoconfig.

An attempt at making Firefox's Nova redesign less rounded and "touch-friendly"

My custom Firefox CSS.

🎮 Everblush GX — Opera GX-inspired Firefox theme with Everblush palette, glassmorphism UI, green glow effects, and Chrome-like density

A compact Firefox theme in plain userChrome.css: navigation, URL bar and tabs on a single row. npx vulpine

A compact and minimal Firefox UI for keyboard-centric users.

A compact, minimalist, Safari-inspired Firefox theme for macOS. Overlay on macFox.

Minimal auto-hiding Firefox navigation toolbar - only the centred URL until you hover. Tab- and sidebar-neutral, so it works with native vertical tabs.