How to detect CSS flex wrap event

I have flex container with items inside. How to detect flex wrap event? I want to apply some new css to elements that have been wrapped. I suppose that it is impossible to detect wrap event by pure css. But it would be very powerful feature! I can try to "catch" this break point event by media query when element wraps into new line/row. But this is a terrible approach. I can try to detect it by script, but it's also not very good.

I am very surprised, but simple $("#element").resize() doesn't work to detect height or width changes of flex container to apply appropriate css to child elements. LOL.

I have found that only this example of jquery code worksjquery event listen on position changed

But still terribly.