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Compass

CSS-authoring framework & Sass library

An open source CSS authoring framework which uses the Sass language to make writing and sharing stylesheets powerful and easy. Compass was the first package-manager and toolkit-sharing platform for CSS, helping popularize the Sass language – and offering powerful browser-compatibility tools that changed the landscape for designers developers.

Upcoming Workshop

Mia from behind,
standing at a laptop -
speaking to a conference audience
and gesturing to one side

Cascading Style Systems

A workshop on resilient & maintainable CSS

New CSS features are shipping at an unprecedented rate – cascade layers, container queries, the :has() selector, subgrid, nesting, and so much more. It’s a good time to step back and understand how these tools fit together in a declarative system – a resilient cascade of styles.

Register for the October workshop »

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Current Sponsors

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Sponsor OddBird’s OSS Work

We love contributing back to the languages & tools that developers rely on, from CSS & Sass to browser polyfills and Python. Help us keep that work sustainable and focused on developer needs!