Mobile browsing site?

Question

Layout

There are some sites like Avito that I don’t understand how to view from a PC on behalf of a mobile phone.
Ie I press Developer Tools, I change the resolution there - but the mobile version does not turn on, the screen just shrinks.
quirktools.com just shows a white screen.
How to be?

Answer 1

m.avito.ru

Answer 2

change not only the resolution, but the device type and then refresh the page