How do I set Firefox 21.0 print margins
I have searched the Mozilla website and used the help to answer this question, with no luck. I need to set the print margins in Firefox 21.0 in Slack 14.0. The header and footer information is printing off the page, even with edge-to-edge enabled. Past Firefox versions had the ability to set the margins in the page setup menu. However, this version does not have that option. The Mozilla help states that it is there, but it isn't in my version. Prior to resorting to manually editing the configuration file, is there something I am missing about how to do this?
Thanks in advance.