userstyle

Makes Discord's Compact mode more like IRC (and thus better)

Put Kindroid on whole page for FHD (1920x1080) screens or more and add customizations (theme) + add new features (scripts).

Black night theme. Without ad, translation button help, bottom-left buttons to other Yandex services, "Services" dropdown.

Customizable Stylus theme for Gitlab and self-hosted GitLab instances.

Black theme for Reddit, also remove ad of premium and bottom-right block with languages and other Reddit company links.

MDN dark style.

Cozyfish UI is a more accessible and cozyiest themes and custom CSS for Firefish. Warm and cozy colors, more bigger icons and fonts, and more.

Complete, feature-rich, very customizable userstyle for WhatsApp.

Stylus userstyle for custom YouTube colors.

An archive of userstyles.org styles and comments

CSS userstyles