dobarkod/django-casper — pull request #14 by nikolas (2014-08-20 14:53:03+00:00)
Title: Use something more standard as the default viewport size

From the casperjs docs:

"PhantomJS ships with a default viewport of 400x300, and CasperJS won’t
override it by default."

http://casperjs.readthedocs.org/en/latest/modules/casper.html#viewportsize