So I have done everything you specified and now I have a userChrome.css file. What do I do with it? Did a post get deleted that explains the next step or am I just blind and stupid.
I am sick of the broken Firefox. The old Microsoft Edge doesn't each switch focus to the tab you make when you do New Tab. The new one doesn't let you execute any of the files that you click on including Microsoft Office files; it only lets me save them.
I am in browser hell.