Firefox Print css

Created by: ogs22

Pages printed from Project Light sites in Firefox have the page URL and title overwriting the page content.

Changing @page { margin: 0.5cm; } to @page { margin: 1.5cm; }

https://github.com/cambridgeuniversity/Project-Light/blob/master/stylesheets/full-stylesheet.css#L2319

fixes the issue.

See 2nd page of attachment for example of bug project-light-print-bug.pdf