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Screen size page

Hello everyone!

I am trying to create one page in my app in the following format: https://cobubble.com/ (screen size, responsive in both width and height).

At the forum I found the following method: Display full page (width and height) and without a scroll bar (putting code in header).
It works but it introduces this page format to all pages in the application.

Is there a way to do it only for one particular page?