Thanks Rodica
(and Mr. Case)!
Here is a link to the full CSS in my child theme: http://pastebin.com/H12rdB0i
I haven’t changed anything in this code in months, except (as mentioned above) to comment out the button spacing to make sure that wasn’t causing the header title to disappear. So all of this was working with the old version of the theme.
Actually, that code is currently irrelevant anyway since they’re only using one button in the header at the moment.
Thanks