The Bootstrap source code download includes the precompiled CSS and JavaScript assets, along with source Sass, JavaScript, and documentation. More specifically, it includes the following and more.

This is the most basic form of Bootstrap: precompiled files for quick drop-in usage in nearly any web project. Bootstrap provide compiled CSS and JS (bootstrap.), as well as compiled and minified CSS and JS (bootstrap.min.). CSS source maps (bootstrap.*.map) are available for use with certain browsers’ developer tools.

Benefits of Bootstrap framework:: Bootstrap is released under the MIT license and is copyright 2017 Twitter. Boiled down to smaller chunks, it can be described with the following conditions.

Benefits of Bootstrap 4.0 to a Developer & a Designer:: You can utilize the complete frameworkfor the best and mobile first web. You will have complete access to: :: Layout :: Content :: Components :: Utilities

If you want to do some experiments na have your own kind of styles, then try the [bootstrap-grid.css] & [bootstrap-grid.min.css], then you will have these access: :: Layout - Only grid system :: Utilities - Only flex utilities

If you want to do some more experiments, then try the [bootstrap-reboot.css] & [bootstrap-reboot.min.css] it will give you only the Reboot style. Reboot builds upon Normalize, providing many HTML elements with somewhat opinionated styles using only element selectors. Content :: Only Reboot

Bootstrap permits you to:

  • Freely download and use Bootstrap, in whole or in part, for personal, private, company internal, or commercial purposes
  • Use Bootstrap in packages or distributions that you create
  • Modify the source code
  • Grant a sublicense to modify and distribute Bootstrap to third parties not included in the license

Bootstrap does not require you to:

  • Include the source of Bootstrap itself, or of any modifications you may have made to it, in any redistribution you may assemble that includes it
  • Submit changes that you make to Bootstrap back to the Bootstrap project (though such feedback is encouraged)