[SippinLean]

That doesn't summarize the article:

>it's not impossible to make multi-dimensional layouts in just Flexbox

Both are 2D layout mechanisms. You can make Grid act like Flexbox and vice-versa but they have different strengths, and are best used in tandem.

[Lio]

Rachel Andrew has added a very illuminating comments to the article which, I think, highlights why Flexbox can't do what Grid does:-

“Potentially Confusing: a “2D” Layout with Flexbox” – that isn’t a 2d layout. It’s a wrapped flex layout. As soon as you want to make that final box line up with the boxes in the first column you realise what you have isn’t two-dimensional.

Flex wrapping doesn’t make it two dimensional. Each row (in your example) is a flex container itself, space distribution happens across each row individually. Which is why it isn’t two-dimensional.

More here https://rachelandrew.co.uk/archives/2017/03/31/grid-is-all-a...

You can also space grid tracks out evenly and so on, box alignment is shared by both the flexbox and grid specifications. For examples of that see http://gridbyexample.com/video/align-grid/