primer/css

Bootstrap is an open-source front-end framework maintained at twbs/bootstrap. It ships compiled and minified CSS and JavaScript for building responsive, mobile-first sites, is licensed under MIT, and the release referenced throughout the README's install instructions is v5.3.8. The project was created by Mark Otto and Jacob Thornton, and its documentation is built with Astro and hosted at getbootstrap.com.

Storybook is a frontend workshop maintained at storybookjs/storybook. It renders UI components and pages in isolation from your main application. Core renderers include React, Angular, Vue 3, Web Components, HTML, Ember, Svelte, and Preact, plus React Native and community support for Qwik and SolidJS. It's released under the MIT license.

Vue 2, also known as Vue.js 2, is the earlier major version of the Vue JavaScript framework, hosted at vuejs/vue on GitHub under an MIT license. Per the repository's own README, Vue 2 hit End of Life on December 31, 2023, is no longer actively maintained, and the project now directs users toward vuejs/core (Vue 3) and an official migration guide, while leaving Vue 2 itself installable through CDNs, package managers, and GitHub.

Airbnb JavaScript Style Guide is a public reference of JavaScript coding conventions maintained in the airbnb/javascript GitHub repository, covering rules for types, references, objects, arrays, destructuring, strings, and functions, among other topics. Most guidelines cite a matching ESLint rule and show bad-versus-good code side by side, and the project also links companion guides for React and CSS-in-JavaScript.