mozilla/pdf.js — pull request #4524 by fkaelberer (2014-03-27 12:34:30+00:00)
Title: Use full screen width in presentation mode

Fixes #4439 by removing all horizontal borders and reducing the vertical ones when in presentation mode.
This improves reading on small devices.

It still looks a little bit awkward that the document is tied to the top of the screen on portrait mode displays, but I didn't figure out how to correctly center it.