You can do that with a file userChrome.css which you have to create.

https://www.userchrome.org/how-create-userchrome-css.html

I can provide code which works if you want to do that.

You can do that with a file userChrome.css which you have to create. https://www.userchrome.org/how-create-userchrome-css.html

Thanks. When I get some free time I will try to follow that.

Other threads I've seen were for coders and the steps weren't spelled out.

I can provide code which works if you want to do that.

That would be great, but you'd have to tell me where to enter it.