When i go to full screen some styles and Scroll not working

Hello.
I have problem using this code.
When i go to full screen some styles and Scroll not working.
Please help.

[private-face]

Hi @HaliAlduhoky, can you show me the code that doesn't work? Preferably on jsfiddle or codepen.

Take this issue away now, because i need to do something else using this full screen.
Is there anyway to make a page full screen while visiting another pages?
This private.fullscreen it's nice just when using it in same page.