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  • Open source

Verified Sep 2026

Cascading Style Sheets

A language that describes the presentation of web pages, such as colors, layout, and fonts.

The styling language of the web, evolved far beyond its box-model origins: CSS Grid and Flexbox killed the layout-hack era, custom properties brought variables,:has brought parent selection, and container queries made truly modular components possible. Modern CSS needs fewer preprocessors every year: the platform caught up.

Who it's for

Anyone building for the web: CSS styles every page on the internet.

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