Windows 10 Firefox 57 ? css. chrome ?

[sportman13]

I am a disabled person not technical hope am not out of line someone installed a zip file with chrome css to make Firefox 57 look like classic look go to screenshot on the top of page site Firefox Configuration - MarkRH I got this which looks nothing like the screenshot on the site can you tell me how to do where I went wrong with step to step of the details set up get back to me please

 

[Neemobeer]

Looks like it's for a specific build of Firefox 57 did you confirm you're on the same version and have the same extensions enabled/disabled. I'm not really a Firefox user, so perhaps someone else that likes customizing their FF browser can chime in.