How to shutdown Mac? (not what you think...)

I already know how to shutdown with a Mac, but this is different.

I have a Firefox add-on called Autohide. The add-on says that if I want Firefox to open in "fullscreen" mode, then all I have to do is shut down while in full screen mode.

Well, while in full screen mode, the menu bar, and dock cannot be accessed, so I am puzzled on how to shut down with Firefox running.

Is there a way to shutdown a Mac without using the menu bar? I am confused on what to do. Thanks!

 

Thanks so much!!!


In full screen mode, there is no button to "quit" FIrefox with, so I was confused. I did the option-command-esc thing to force quit it and it didn't work, because it wouldnt let FF save.

I just tried the command-q thing and it let FF save the settings. Thanks so much for the very fast and helpful response! Cheers