Under what permissions should a designer draw?

Question

Design

There is a new designer. I need to tell him under what permissions to typeset. What numbers should I give him? As I understand it, it is necessary to do it at 320 in order to find out how the site will look at the smallest resolution. And what other permissions?

Answer 1

It depends on the conscience of the designer and on the grid that he and you will use.
I would ask for 992px, 320px and 1200px (because I'm using bootstrap)