Set Screen Aspect Ratio (Hard Code Size)

Hello All,

I am working on using Retool for a couple of info displays in our office and want to hard code in the aspect ratio of the screen/app. Meaning I would set the ration to 9/14 or something similar to that. I was able to get this kind of working but the scroll bar still seams to be there. Wondering if anyone has been able to do this with the custom CSS.

Thank You!