Frameworks CSS
Titres Pros IMeP et CDUI

The most advanced responsive front-end framework in the world. | Foundation
Foundation for Sites is jam-packed with features to help people rapidly build content-focused websites. Foundation for Sites provides you with HTML, CSS, & JavaScript to help you quickly prototype. It's easy to customize & extend to get your project polished & shipped.
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Semantic UI
Semantic empowers designers and developers by creating a shared vocabulary for UI.
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Bulma: Free, open source, and modern CSS framework based on Flexbox
Bulma is a free, open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
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Material Design Lite
A front-end template that helps you build fast, modern mobile web apps.
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Material-UI: A popular React UI framework
React components for faster and easier web development. Build your own design system, or start with Material Design.
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Bootstrap
The most popular HTML, CSS, and JS library in the world.
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Free Bootstrap Themes, Templates, Snippets, and Guides
Start Bootstrap develops free to download, open source Bootstrap 4 themes, templates, and snippets and creates guides and tutorials to help you learn more about designing and developing with Bootstrap.
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Bootstrap 4 or Bootstrap 5
Bootstrap is a free CSS framework .
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