Cascadea - Remix the web.
Cascadea is a Mac app and bundled Safari App Extension enabling you to use custom CSS rules to change the appearance or layout of just about any website. Whether you want to declutter a busy site, make a custom dark theme to soothe your eyes, prototype new CSS for a web app you develop, or just install styles that other people have made, Cascadea makes it easy to write, use, and share custom CSS.
