1. Resources To Help You Learn CSS Chris Bongers curated a list of 10 games to help you learn CSS Flexbox and Grid. I’m a huge gamer and I’ll jump at any chance to game and learn at the same time. I can give Flexbox Froggy and Flexbox Zombie my seal of approval because I’ve played and enjoyed them. I stopped playing the Flexbox games because I felt I understood the concept enough to build on my own.