Self-host the Inter font in a neatly bundled NPM package.

An implementation of the CSSStyleDeclaration class from the CSS Object Model specification

CSSTree syntax for parsing Tailwind custom syntax.

Reduce initial definitions to the actual initial value, where possible.

Use the rebeccapurple color keyword in CSS

Blazing fast zero-runtime CSS in JS library

Use 4 & 8 character hex color notation in CSS

Common utility functions for Node.js used and maintained by Benjamin Lupton

A esbuild plugin to bundle css modules into js(x)/ts(x), based on extremely fast [Lightning CSS](https://lightningcss.dev/)

OpenTelemetry GenAI utility for standardized telemetry collection across LLM, Agent, Embedding, Tool, Retrieval, Rerank, Memory and more

Styled System for the `css` prop

Leaner CSS

Implements css() interface on top of JSS

PostCSS plugin to unwrap nested rules like how Sass does it

Use env() variables in CSS

A simple CSS minifier that uses a port of YUICompressor in JS

A mighty CSS linter that helps you avoid errors and enforce conventions.

https://github.com/deanm/css-color-parser-js

CSS color - Resolve and convert CSS colors.

PostCSS plugin to transform CSS Custom Properties(CSS variables) syntax into a static representation