This is why I use the SeaMonkey browser! My browser hasn't has any significant change in appearance or in menus in over 15 years! Ha!
This browser was born when the Mozilla browser became Firefox, to keep the look of the former.
There are two things I absolutely hate with the firefox browser:
(1) the tabs at the very top, I often use firefox when connected to a machine through remote desktop, the rdp toolbar pulls down as I try to change tabs
(2) the menu should be a list of items, not big icons. I have a keyboard and mouse, I prefer to use them efficiently.