Bootstrap is open source and most popular front-end framework for developing responsive, mobile first projects on the web. It's hosted, developed, and maintained on GitHub.
Bootstrap have responsive grids and many components to build a responsive website quickly. Boostrap has much reusable components built to provide iconography, dropdowns, input groups, tootip, navigation, alerts, and much more. By default Boostrap has awesome custom jQuery plugins and it's very easy include all, or one by one.
Boostrap CSS preprocessors:
LESS and SASS makes Boostrap more powerful. CSS preprocessor helps you write maintainable, future-proof css code and it will seriously reduce the amount of CSS you have to write. CSS preprocessors best in large-scale user interfaces that require huge stylesheets and many style.
Boostrap advantages:
- Boostrap supports all major browsers.
- Boostrap is Well-documented.
- Makes development faster and easier.
- Included LESS and SASS CSS preprocessors.