Most of my pdfs will have 2 pages with unique page backgrounds that will need to flow into the bleed. I use the @page with negative background-positions to make it go into the bleed area. The problem is that it uses the same background image with every page. How would I be able to have 2 separate backgrounds for unique pages?

Sample:
page 1 background: image1.tiff
page 2 background: image3.tiff
page 3 background: none

and the backgrounds flow into the bleed.

You can use "@page:nth(1) { ... }" and "@page:nth(2) { ... }".