Awesome GitHub RepositoriesCSS Compatibility Diagnostics

Autoprefixer is a PostCSS plugin and browser compatibility tool that automatically manages vendor prefixes for CSS rules. It functions as an abstract syntax tree transformer that parses CSS to insert required prefixes and remove obsolete ones based on real-time compatibility data. The project differentiates itself by providing a dedicated CSS Grid polyfill, which translates modern Grid syntax into legacy formats for older browser versions. It also allows for granular control through the use of inline CSS comments to selectively enable or disable prefixing for specific rules. The system cover

caniuse is a community-maintained dataset and command-line tool that provides browser support information for HTML, CSS, and JavaScript features. At its core, it stores structured browser compatibility facts as a flat JSON dataset, keyed by feature identifiers and browser-version tuples, making the data easily queryable through a CLI or JSON API. The project distinguishes itself through several practical tools built on top of this dataset. It includes a CSS compatibility linter that scans stylesheets to identify features lacking support in a target browser audience, and a feature support quer