Bootstrap is a free front-end framework for faster and easier web development.Bootstrap also gives you the ability to easily create responsive designs.
Bootstrap includes HTML and CSS based design templates for typography, forms, buttons, tables, navigation, modals, image carousels and many other, as well as optional JavaScript plugins.
Implementing Responsive Design Framework on your website is not only about adjusting screen resolutions – but also all the other media in your page including Images and Videos. We therefore need to look at the design in a new way.