Bootstrap provides you with a grid and many other CSS components for building your websites and web applications. You can use the compiled version of Bootstrap directly after downloading it. In this book, you will learn Bootstrap's source code and compile your own version of Bootstrap.

The Less code for compiling Bootstrap's CSS components is well organized. The outcome depends on a set of variables; these variables are grouped in a single variables.less file. The lazy loading nature of Less along with the last declaration wins rule enables you to override (or re-declare) these variables later to fit your needs.

Bootstrap also comes with a set of jQuery plugins. Some CSS components depend on these plugins and some Less codes are only needed for these plugins. Modifying or extending the jQuery plugin is beyond of the scope of this book.

The grid, all the other CSS components, and the jQuery plugins are well documented at http://getbootstrap.com/.

Bootstrap's default...