what is bootstrap3

bootstrap3 refers to the bootstrap v3 version, the latest version number of which is 3.4.1; bootstrap was developed by Twitter designers Mark Otto and Jacob Thornton, and is a CSS/HTML framework.

#The operating environment of this article: Windows 7 system, bootstrap3 version, Dell G3 computer.

What is bootstrap3?

bootstrap is a simple, intuitive, and powerful front-end development framework that can make web development faster and simpler. And bootstrap3 refers to bootstrap v3 version.

It was developed by Twitter designers Mark Otto and Jacob Thornton and is a CSS/HTML framework.

Version form

Currently the most widely used versions are 2, 3 and 4. Among them, the latest version of 2 is 2.3.2, and the latest version of 3 is 3.4 .1, the latest version of 4 is 4.4.1

In late January 2018, the Bootstrap team released the official version of Bootstrap 4. The main changes in 4 include the following aspects:

• Migrating from Less to Sass

• Improve grid system

• Default flexbox support

• Dropped wells, thumbnails, and panels for cards

• Merge all HTML resets into a new module: Reboot

• New Custom options

• No longer supports IE8

• Rewrite all JavaScript plug-ins

• Improvements Automatic positioning of tooltips and popovers

• Improved documentation

• Many other improvements

Recommended learning : "bootstrap video tutorial"

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