Is it possible to set the same screen resolution for all devices?

Hi, I have been using Nicepage for a couple of years now and it sure is a nice tool to create webpages. But one thing that I still haven't figured out is the different screens that you can edit...

In Nicepage update 4.4 you added: - Support for large screens When you upload an image, WordPress creates three different image sizes. Thumbnail Medium The great Original size These images are...