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Peter Cai 3f50d55992 Merge remote-tracking branch 'origin/master' 1 year ago
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Mastodon Flat CSS (MFC) is a flat CSS theme for Mastodon, with varying palette options. Formerly known as Mastodon Midnight Blue.

Demo screenshots

See all palette demos in the screenshots/ subfolder.

Midnight Blue Droid Clean Slate Flamingo
Midnight Blue Droid Clean Slate Flamingo

How to use

  1. Install a user-style manager, such as Stylus.
  2. Create New Style
  3. Copy-and-paste the contents of mastodonFlat.css into your new user-style.
  4. Uncomment your desired color palette, or set your own color variables.
  5. Set the style to be applied to URLs on the domain of your instance (e.g.
  6. Enjoy!

Alternatively, this theme may be installed from

Tweaks included

This theme applies a few colors, but leaves the class names somewhat ungrouped so that you can experiment for yourself if you wish to modify this theme with your own color choices. This theme also removes borders for a flat look, as well as replaces the font on most text elements. Finally, it forces the full display name and account handle to be shown, and on separate lines.