Detailed Information

Leu is a UI component library that implements the official design system of the Canton of Zurich as framework-agnostic Web Components. Built with standard Custom Elements, it drops into any frontend stack — React, Vue, plain HTML, or anywhere else — without locking you into a specific framework. Install it via npm, or skip the build step entirely and pull components straight from a CDN for quick prototyping or tools like Observable. Each component ships with theming out of the box (theme.css), and a comprehensive Storybook instance documents usage and behavior for every component. Note that the library hasn't reached a major release yet, so minor versions may include breaking changes — reach out to the maintainers if you're planning to use it in production.