https://preset-env.cssdb.org/
PostCSS Preset Env - CSS Tools
PostCSS Preset Env lets you transform modern CSS so most browsers can understand, determining the polyfills you need based on the browsers you want.
postcss preset envtools
https://github.com/csstools/postcss-preset-env
GitHub - csstools/postcss-preset-env: Convert modern CSS into something browsers understand
Convert modern CSS into something browsers understand - csstools/postcss-preset-env
postcss preset envgithub