EQCSS is a CSS Reprocessor that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up

Polyfills the ResizeObserver API.

😎 📏 React hook to measure an element's size and handle responsive components.

📦 Modular responsive component

Prolyfill for CSS Container Queries

A simple, tiny alternative to element/container queries

CSSplus is a collection of CSS Reprocessor plugins that dynamically update CSS variables

Make container queries that harness the power of Ember

Friendly container queries for Ember

A cutting edge UI library to suit professional teams as well as tinkering hobbyists.

Add JavaScript tests to <link> tags to toggle stylesheets

[Buggy on Firefox] React hook for media queries on window and any container element. NOTE: Container Queries seem to be coming to browsers in 2022!

vue-container-query

Responsive elements script.

A modern starter CSS library with container queries, a real CSS grid system, clamp() powered typography and spacing sizes, color-mix() shade utilities, and custom properties.

An element query plugin for jsincss

Modern, vanilla (no dependencies), standards compliant, pure CSS UI template.

Nested master detail example with container queries

My personal website, built with Next.js 14

🔬Regrowth is a monstrous laboratory experiment in container queries brought to life.