#css

Catch every CSS change before it ships — review PRs and certify refactors by the browser's computed styles, not pixels. Works with any styling system.

Vue & Nuxt library of standalone components & tools to build interfaces

🏛️ The fastest and tiniest utility for conditionally joining classNames.

An extremely fast bundler for the web

Self-hosted Next.js 16 CMS — collections, blocks, themes, plugins. TypeScript + Drizzle + Postgres.

🍞 Smoking hot toast notifications for Angular.

A source generator for generating Quark css files at compile time

Design token system — colors, dimensions, typography, and effects as CSS variables, JSON, and TypeScript

A Functional Library for Daily Frontend Work

A Tailwind & UnoCSS-like utility-first, atomic CSS framework.

JavaScript animation engine

Reusable Biome Config

An enumeration for Quark, representing placement.

A μ-library for constructing cascading style sheets from Python dictionaries.

Machine-readable references of terms defined in web browser specifications

A Stylelint plugin to help you write more defensive, accessible, and maintainable CSS

ESLint mono-plugin bundler with strict, opinionated defaults for JavaScript, TypeScript, Svelte, HTML, CSS, JSON, JSONC, and YAML.

Raw browser/feature support data from caniuse.com

Verifies & compiles reduced-motion-safe, on-budget UI animation for AI-generated web apps. Validated specs → deterministic GSAP/WAAPI-CSS; WCAG 2.2.2 + 2.3.3 checks. MIT core + keyless MCP server. Not Motion.dev/Framer Motion, not the Android/iOS MotionSpec classes, not a video generator.

Modern client-side development for Rails

A javascript text differencing implementation.

BladewindUI is a collection of elegant Laravel blade-based UI components spiced with TailwindCSS and Javascript.

Provides source generation for Quark component presets

↔️ Convert CSS between left-to-right and right-to-left. Mirror of https://gerrit.wikimedia.org/g/mediawiki/libs/node-cssjanus/. Contribute via https://www.mediawiki.org/wiki/Developer_account.

A tiny CSS parser

A lightweight runtime CSS/JavaScript file minification, combination, compression & management library for ASP.Net Core

Constraint-based adaptive rendering framework. Maps continuous signals (viewport, scroll, time, pointer) to discrete states via BoundaryDef primitives. Multi-target compilation to CSS @container queries, GLSL/WGSL uniforms, ARIA attributes. Effect v4 reactive runtime with hysteresis, blend trees, and content-addressed identity.

Create keyframe animations for anything in JavaScript

Ruby HTML and CSS sanitizer.

Eslint plugin to handle canonical classes.