Bootstrap 3 appeared in August of 2013, switching to a flat design and a mobile-first approach. One of the primary features was the introduction of the 12 column responsive grid system. They released it as an open source project in August of 2011.īootstrap 2 was released in January 2012. Twitter originally developed the Bootstrap framework as an internal tool.
It also includes optional JavaScript functionality like collapsible content, carousels, and modals.
It is a great starting point for building a mobile friendly website. Modern browsers such as Chrome, Firefox, Opera, Safari, and Internet Explorer support Bootstrap.īootstrap includes a responsive grid system for varying layouts. It contains pre-built components and design elements to style HTML content. Bootstrap is a popular front-end framework for web development.
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