Use a place-* shorthand for align-* and justify-* in CSS

Adds a static `extend` method to a class, to simplify inheritance. Extends the static properties, prototype properties, and descriptors from a `Parent` constructor onto `Child` constructors.

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

Use logical properties and values in CSS

POC for Sanity Design Tokens

Emmet — the essential toolkit for web-developers

A drop-in replacement for react-markdown, designed for AI-powered streaming.

Shape utilities for Material Components for the web

A shim to provide basic functionality to IE/Edge for changing custom CSS properties at runtime.

Open Web data by the Mozilla Developer Network

An experimental PostCSS plugin with a collection of custom CSS properties and at-rules

Use Custom Media Queries in CSS

LaunchPad design tokens delivered as CSS custom properties, CommonJS modules, and ES modules.

TailwindCSS v4.0 compatible replacement for `tailwindcss-animate`.

Spectrum Web Components are a [`LitElement`](https://lit-element.polymer-project.org)-powered web component library implementing Adobe's Spectrum design system. This package defines the CSS custom properties that implement design tokens from [Spectrum Tok

CSS color - Resolve and convert CSS colors.

A library to convert JavaScript Object to CSS Variables

Calypso Shared Style Bits.

A CSS Modules transform to extract local aliases for inline imports

Throw better errors.