Bootstrap 4 is built with Sass (Bootstrap 3's source code was built with Less). For my team, most of us had been using the Sass version of Bootstrap 3, and we d

Bootstrap 4 is built with Sass (Bootstrap 3's source code was built with Less). For my team, most of us had been using the Sass version of Bootstrap 3, and we decided to take Bootstrap 4 and create a customized version for our team. That task was made a lot easier with the source code being written in Sass.