#postcss

Tailwind CSS is a utility-first CSS framework that lets you build custom designs directly in your markup by composing low-level utility classes instead of writing custom CSS. It generates only the styles you use via a build step, keeping output small.

PostCSS is a tool for transforming CSS with JavaScript plugins. It parses CSS into an abstract syntax tree, lets plugins inspect and mutate it, then stringifies the result — powering everything from autoprefixing to future-syntax polyfills and minification.