Display webpage contains multiple divs on a dual monitor (each div on a single monitor)

I have a webpage which contains multiple divs using css-grid (divA and divB) for example. Also I have 2 monitors (physical screens).

I want to display divA into first monitor and divB into second monitor.

I am looking answers for the following questions:

1. How can I position divA in the first monitor and divB on the second monitor (responsively)?
2. Any simulator available to manipulate dual screens on a single monitor to test this scenario please?

Any help or suggestion greatly appreciated.

Thanks, Ashwin