[RheingoldRiver]

My mnemonic for justify vs align is to picture the "justification" options in a word processor. you can justify content to the side of the primary axis when it's written right-to-left. so, justify is main axis, and the one that's not justify (align) is the one that's not main axis (cross axis).

What I don't remember ever is does flex default to row or column; so I write a lot of unnecessary `flex-direction:row;` but if you are fine with always specifying a direction, the default doesnt really matter either.

[crazygringo]

Which is even more confusing because that's not the terminology used in word processors.

Word processors have four modes of alignment -- left, center, right, and justified. Justified means stretching out to both edges.

There's no such thing as justifying content in a particular direction. And justifying something to the center is purely nonsensical.