How to Create a New Breakpoint in Bootstrap 4

In Bootstrap 3, adding a new grid tier (breakpoint) was not a simple process. It required various LESS or CSS customizations. Thanks to Bootstrap 4 SASS, and the new $grid-breakpoints variable it's very easy to add a new grid tier. Consider for example you want to add a new "extra extra small" breakpoint named xxs

Bootstrap 4 SASS Variables

Playing with Boostrap 4 and SASS The upcoming Bootstrap 4 is built with SASS, and you can customize many options in the _variables.scss. There are several options to quickly change the default Bootstrap look. Set the SASS variables to easily change the grid breakpoints, container widths, borders, colors, fonts and more. There is also