Charles, we don't know much about your setup. We can't look over your shoulder.
Most monitors should be set to their native resolution. You should be able to find what that is by consulting its manual, or googling. Also, you can right-click the desktop (the display when there are no windows open or all windows are minimized) and click on Display Settings. Let us know what you see there.
How are you sizing the window of your browser that you use for POTN? (We really don't know what you are doing.)
I am not a computer GEEK at all. I am a dummy there.
I just went to my desktop screen and right clicked on a clear screen, then clicked on "Display Settings" that shows my display resolution is 1280 X 1024
Here in POTN if I go to FYEO then scroll down to "Page Margins" and then click on "Open the custom margins tool" I then see this. So if my computer is telling me my resolution is 1024, why is the custom margins page say I am at 1010??

