CSS & Styling Packages
Styling utilities, CSS-in-JS, and class-composition helpers for building consistent, maintainable interface styling (Tailwind utilities, clsx, cva, Emotion).
Packages in CSS & Styling
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premailer
Turns CSS blocks into inline style attributes for HTML email compatibility
CoreUI
An advanced UI library built on Bootstrap 5, adding extra components, native RTL/LTR support, and framework bindings for React, Vue, and Angular.
PatternFly
The official HTML, CSS, and Handlebars source for PatternFly, Red Hat's open-source design system for building consistent enterprise UIs.
scssphp
A pure-PHP SCSS/Sass compiler with no native extension dependency
grass_compiler
The Rust engine that powers the grass Sass-to-CSS compiler, exposing its lexer, parser, evaluator, and serializer directly.
use-media
A tiny React hook that tracks live CSS media query state without manual matchMedia wiring.
@wyw-in-js/babel-preset
Babel preset that bridges classic Babel build pipelines to WyW-in-JS's Oxc-based zero-runtime CSS-in-JS transform.
css-inline
High-performance library for inlining CSS into HTML style attributes
css-what
A lightweight, spec-compliant CSS selector parser and stringifier with zero runtime dependencies
color-string
Parses and generates CSS color strings across hex, rgb, hsl, and hwb formats with alpha channel support throughout.
classix
The tiniest and fastest utility for conditionally joining classNames using plain string expressions.
webcolors
A pure-Python library for converting and normalizing HTML/CSS color names, hex codes, and RGB values
css-box-model
Computes precise margin, border, padding, and content box measurements for a DOM element, going beyond getBoundingClientRect.
css-color-names
A JSON object mapping every standard CSS color name to its hex value, ready to require() and use directly.
known-css-properties
A continuously updated list of every standard and browser-vendor-prefixed CSS property name, ready to import.
cssutils
A validating Python library for parsing, building, and serializing CSS Cascading Style Sheets through a DOM Level 2 API.
jss-rtl
A JSS plugin that automatically flips CSS rules to generate right-to-left stylesheets.
postcss-extend-rule
A PostCSS plugin that brings Sass-style @extend at-rules and % placeholder selectors to plain CSS.
style-mod
A minimal, dependency-free CSS-in-JS module shim for generating and mounting scoped style rules on a document or shadow root.
SymfonyCasts Sass Bundle
Delightful Sass support for Symfony AssetMapper with no Node.js required
stylis-plugin-rtl
Stylis plugin that flips CSS to right-to-left using CSSJanus
@acemir/cssom
A pure-JavaScript CSS parser and CSS Object Model implementation.
cssinjs-utils
Typed CSS-in-JS helper utilities that power Ant Design's style-generation, token-calculation, and CSS-variable pipeline.
Material Components for Web
Modular and customizable Material Design UI components for the web.
