I created a custom div container 1280 px wide.
On one it has "flex item" turned" which I have no clue how it happened.
I have another div container below which does not, and the columns within it do flex as needed.
How do I turn flex item?
Has "flex item" showing on right side panel:
"Flex item" is not showing on right side panel
This one flexes in browser:
This one does not: