doiuse2

Lint CSS for browser support against the caniuse database. Version 6.0.0 is current stable, released on npm. It integrates as a PostCSS plugin, CLI tool, and transform stream. Differentiators: uses actual caniuse data, supports ignore lists by feature or file globs, outputs human-readable or JSON messages, and works with Stylelint. Alternatives like Autoprefixer add prefixes rather than warn on unsupported features.