Today I learned about the order attribute, which would have come in handy this year.

Due to the magic of working primarily with perfectly functional but older projects, I only recently got the chance to start using flexbox. I immediately loved it far more than the float/clearfix headache I was used to.

The only thing that trips me up is the difference in naming with justify-content and align-items. I feel should both be (justify|align)-(THE SAME THING).

edit: Just got to 21. Looks like my confusion is common enough that there's a level about it.