Pure is a minimal, responsive CSS library that provides a set of small, modular styles for base HTML elements, grids, buttons, forms, menus, and tables. It builds on Normalize.css for cross-browser consistency and follows SMACSS conventions for easy customization. The repository contains the source CSS files, a Grunt-based build system that generates minified and prefixed bundles, and a Docusaurus documentation site. The library is production-ready, extremely lightweight (3.7KB gzipped), and designed to be a starting point for any web project without imposing a specific look.