The open source Bootstrap uses JavaScript, HTML, and CSS for developing mobile-first websites. Developers can build applications using Sass variables and mixins, the Bootstrap grid system, and ...

Among Bootstrap's more impressive tricks is the grid layout tool, which is based on the 960 grid system, with support for advanced features like nested and offset columns.

The Bootstrap Grid One of the most critical things to understand with Bootstrap is the included grid system. When first getting started, you'll want to imagine it as being a grid with 12 columns. As ...