The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.
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Jun 6, 2025 - MDX
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CSS Framework
CSS Frameworks offer one or multiple stylesheets from basic styling to generic components to some extent, including but not limited to
- Reboot (aka "Preflight")
- Layout (often times "Grid")
- Forms, Tables, etc.
- Responsiveness (often times including breakpoints and viewport)
They often have their own class notation and many use preprocessors like Sass, Less or Stylus.
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