Ahmed Bouchefra introduces key Bootstrap CSS classes for building layouts with the Bootstrap grid system, along with a quick introduction to using Flexbox.
Tag: flexbox grid
Bootstrap Grid: Mastering the Most Useful Flexbox Properties
Introducing sGrid: A Stylus-based Flexbox Grid System
Julian Ćwirko is the author of sGrid: A flexbox and Stylus-based grid system that can be useful for rapid prototyping or hybrid mobile apps.