Gitlab CE display in Firefox 10

Hi everyone. I unfortunately am using a system with Firefox 10.0.5 (I know, it’s ridiculously old). Due to system regulations, Firefox is the only browser I can use, and I am unable to update it. Let’s consider this a constraint to my problem…
Gitlab cannot display properly: the icons are in the wrong places, banners are the wrong size, buttons are in locations that are not clickable, etc. Is there any way at all to make Gitlab display properly on this old version of Firefox?
I have Gitlab CE 13.1.4. It is a standalone instance, hosted on my own server.
Thanks all.