I am finally upgrading to a current version of firefox (I have been running 52ESR for past while). I really don't like the look of the current version. I really prefer the look of firefox, from about couple of *decades* ago, as shown in the attached image. The theme I was using (Firefox 2, the theme) is no longer supported (or really any such complete theme. I am hoping that it might be possible to create a CSS file that I can drop into the chrome sub-directory in the firefox preferences that will attempt to recreate that look. I know, what I want is a terrible ancient look, but I find the so-called modern look horrible (there is no accounting for taste). Is this even remotely possible? Or should I just start looking for some other webbrowser (which might be very difficult, given the O/S I am using).