When writing a new email the font style will not change. I have Yahoo mail through sbcglobal.net and there are several choices to pick from in the font styles but no matter which one I click on, the font style doesn't change. When I go to 123greetings.com and try to customize a card and put in my text, the font style will not change. There are a variety of font styles to choose from when filling in a card but the font style does not change no matter which one I click on. So I decided to open my mail in Microsoft Edge to see if there was a problem there - there wasn't. I can pick any of the font styles and they change. I also went to 123greetings.com (using Edge) and tried to customize a card and again no problem, I was able to change the font style to any one that I wanted.Do I need to do a Firefox fix or uninstall and reinstall Firefox? Thanks.