The mainboard is compatible with the graphics card. You should rather make sure that your power supply has enough power and that the graphics card fits into the housing in terms of dimensions ;)

Yes, it is compatible without any problems.
The only problem I had at least was installing the 3070 with a riser on the PCIE 4.0 port. I had to go to the 3.0 port afterwards, had image errors and black screens. Maybe I was the problem or something else, but in any case it works with a riser on the 3.0 port.

Is compatible, yes. Why not?