Firefox Edge

Firefox Edge is a theme for Mozilla Firefox that closely replicates the look of Microsoft Edge (both light & dark themes) without losing any features of Firefox.
The theme is applied only to the top level visuals, meaning that context, popup etc. menus will keep their default look.

Firefox Edge has been tested on Windows 10 and Firefox 50.

Installation

Method 1

1. Install the Stylish addon for Firefox
2. Head to Firefox Edge userstyles page
3. Choose either Light or Dark from Theme option.
4. Click on Install with Stylish to preview or install the theme

Note: After installing the theme you might need to restart Firefox to correct any visual bugs.

Method 2

1. Type about:support in Firefox address bar and press Enter
2. Find and click Show Folder button to open you Firefox profile folder
3. Create a file called userChrome.css
4. Open userChrome.css in Notepad and paste in the code of Firefox Edge
5. Save the userChrome.css file and restart Firefox

Note: You can find the code either in the FirefoxEdgeLight.css, FirefoxEdgeDark.css files, or on the Firefox Edge userstyles page by clicking on Show CSS.