Remove margins when exporting to PDF

I am trying to export a Power BI report as a .pdf, but every time I do, the program adds little white margins at the top and bottom of the page.

Looking this problem up online shows that this question has been asked before, but the answers provided in this thread don't work. These users suggested changing the page size or the view settings would get rid of the white margins, but it's clear, from trying these solutions, that the white margins are added regardless of page size. The white margins are the exact same size regardless of the page size I use.

Is there some way to turn off margins when exporting as a PDF?