Bootstrap Versions

  • Bootstrap 2
  • Bootstrap 3
  • Bootstrap 4
  • Bootstrap 5

Bootstrap 2

On January 31, 2012, Bootstrap 2 was released, which added built-in support for Glyphicons, several new components, as well as changes to many of the existing components. This version supports responsive web design, meaning the layout of web pages adjusts dynamically, taking into account the characteristics of the device used (whether desktop, tablet, or mobile phone).

Features

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  • Added a twelve-column division style.
  • Responsive grid layout system.
  • Inbuilt support for Glyphicons.
  • Several new components.
  • Prepared monochromatic icons and symbol.
  • Created with an emphasis to simplicity and easy orientation.
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Bootstrap3 Icon

Bootstrap 3

On August 19, 2013, Bootstrap 3, was released. It redesigned components to use flat design and a mobile first approach. Bootstrap 3 features new plugin system with name spaced events. Bootstrap 3 dropped Internet Explorer 7 and Firefox 3.6 support, but there is an optional polyfil for these browsers.

Features

  • Redesigned components to use flat design, and a mobile first approach.
  • In this release, Bootstrap follows the mobile-first approach and makes your site always responsive by default.
  • The new grid is significantly simplified and combined into one single grid system.
  • JavaScript plugins are rewritten and all events are now namespaced to prevent any conflicts that may occur.
  • Now the customizer can save your customizations to an anonymous Gist for easy reuse, sharing, and modifications.
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  • Smallest file size. With the changes made in this release a reduction of over 20% is achieved in the minified CSS file.


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Bootstrap 4

Mark Otto announced Bootstrap 4 on October 29, 2014. The first alpha version of Bootstrap 4 was released on August 19, 2015. The first beta version was released on August 10, 2017. Mark suspended work on Bootstrap 3 on September 6, 2016, to free up time to work on Bootstrap 4. Bootstrap 4 was finalized on January 18, 2018.



Features

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  • Grid System Improvements.
  • Flexbox ships lot of amazing features which makes the bootstrap a powerful framework.
  • Improved Form Support.
  • SASS Flexible Performance.
  • Introduced New Card Components.
  • Responsive Spacing Utilities.

Bootstrap 5

Bootstrap 5 was officially released on May 5, 2021.

Features

  • Added a twelve-column division style.
  • Responsive grid layout system.
  • Inbuilt support for Glyphicons.
  • Several new components.
  • Prepared monochromatic icons and symbol.
  • Created with an emphasis to simplicity and easy orientation.
Bootstrap5 Icon


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