Is it possible to use div immediately after row?

Question

HTML

Hello.
I watched a lesson on layout and the following construction was used there:


Question: is it permissible to use div immediately after row or is this incorrect and it is only necessary row> col-> div?

Answer 1

starting from the third bootstrap in its validator there was a basic rule that only rows can be parents of columns, and columns can be children of rows. It has to do with grid styles. In particular, in the fourth bootstrap, the rows have a flex display, which implies its effect on descendants. It is also recommended not to mix the grid and layout, that is, for example, insert some cards into columns, and not make columns into cards.
But, of course, no one forbids you to do as you like.

Answer 2

Why not allowed? It is acceptable where non-standard markup is needed that goes beyond the capabilities / settings of the current build, although I would not do that, more glitches than profit, or make up with your own styles, or follow the bs guide.