What is Bootstrap and training in Bootstrap

What is Bootstrap?

Bootstrap is an open-source Java-Script framework developed by the team at Twitter. It is a mixture of HTML, CSS, and Java-script code intended to help construct user boundary components. Bootstrap was also programmed to shore up both HTML5 and CSS3.
Also it is known as Front-end-framework.
Bootstrap is a free set of tools for designing websites and web applications.
It contains HTML and CSS-based design templates for typeface, forms, buttons, navigation and other interface apparatus, as well as optional JavaScript extensions.

Some Reasons for programmers favored Bootstrap Framework

1.      Easy to get started

2.      Great grid system

3.      Base styling for most HTML elements(Typography,Code,Tables,Forms,Buttons,Images,Icons)

4.      Extensive list of components

5.      Bundled Javascript plugins