gray border around pdf

I have tried changing the background setting in normal mode and there is still a gray border around the book.

Reduce the page depth – it is not border it is pages https://www.youtube.com/watch?v=DKUtxM8tc1A .

• This reply was modified 6 years, 6 months ago by iberezansky.

Thanks! It seems to look better on flip-books made with images so we will switch to images.

• This reply was modified 6 years, 5 months ago by A. Jones.