CSS base files Simple and/or classless Normalize.css Vanilla CSS SPCSS (example) Bolt CSS Brutal CSS Slightly more involved options Simple.css (code) sakura (code) Classless.css Water.css Bulma Other lists Awesome CSS Frameworks Blog posts Using local fonts Boilerplate HTML Tools Lightning CSS (code repo: "An extremely fast CSS parser, transformer, bundler, and minifier written in Rust."