I'm trying to get the three flex children boxes to stretch using flexbox to fill the container so that all three boxes are the same size. However, I don't want the first two inside boxes to stretch
css - What does flex: 1 mean? - Stack Overflow
CSS Grid Magic: A practical card example from my An Event Apart talk.
Mastering CSS Flexbox: Basics to Advanced Tips
The “Flexible Box” or “Flexbox” layout mode offers an alternative
CSS Flexible Box Layout Module Level 1
CSS Flexbox : Part 2 Beginner to Advanced
Flexbox Codrops
css - why isn't my flexbox flex-stretch property working? - Stack Overflow
CSS Flexbox — Soshace • Soshace
Putting Flexbox into Practice