Bootstrap is a user interface (UI) framework initially designed at Twitter and later open-sourced. The library is basically a collection of HTML, CSS, and JavaScript UI widgets.

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An alpha is out for the next version of the popular Web design framework, so here's what designers interested in migrating from Bootstrap 3 need to keep in mind ...

Twitter's Bootstrap gives developers an easy to use, grid-based and responsive framework for quickly designing prototypes and basic web pages, as well as production-ready interactive sites. With ...