For the answer go to menu ≡ => Help => About Firefox.

Hi  !

Your system details show that you have Firefox version 57 installed, which is 'Quantum'. It's called 'Quantum' because Firefox 57 'takes a quantum leap forward in speed and looks'.

USAFsarge said

I cannot find Firefox Quantum download site; all I can download is the regular Firefox I have tried downloading what I thought was the Quantum browser,

Quantum is Firefox 57.0 and later as it is not a new name or such.

www.mozilla.org/firefox/all/

Omigosh, I had Firefox 57 all along (Quantum). Who would have known. My Thanks to the contributors here. Maybe the file name that you download should be "Firefox Quantum" instead of "Firefox."

fyi : https://www.howtogeek.com/333805/how-to-change-or-customize-firefoxs-new-tab-page/ https://www.howtogeek.com/333110/how-to-customize-firefox-quantum-and-remove-the-white-space-around-the-title-bar/ https://www.howtogeek.com/332449/whats-new-in-firefox-quantum/

https://addons.mozilla.org/en-US/firefox/extensions/

https://www.howtogeek.com/334716/how-to-customize-firefoxs-user-interface-with-userchrome.css/ http://techdows.com/2017/09/classic-theme-restorer-userchrome-css-modify-firefox-57-photon-ui.html https://www.accessfirefox.org/Theme-Font-Size-Changer.php https://www.userchrome.org/ https://www.accessfirefox.org/Firefox_Accessibility_Themes.php https://www.userchrome.org/what-is-userchrome-css.html http://kb.mozillazine.org/UserChrome.css https://github.com/axydavid/FirefoxUI/blob/master/README.md https://github.com/wilfredwee/photon-australis Note not all code in one place, dedicated sub-Reddit/Firefox on this

Please let us know if this solved your issue or if need further assistance.

Problem solved, PKShadow. I guess I didn't really have one except for not realizing I didn't have a problem.

Forgot to thank you for those great links, PK! Much appreciated.

Someone took the trouble to blame me for not using the forum correctly in the technical sense. This is my first time here. Would be nice to be supported rather than criticized. I'm a new user. Sometimes, it it is a virtue to show patience and understanding toward someone who is doing something for the first time. This principle applies to everyone. I'm very patient when I train people. I thanked everyone here quite heartily for their help regarding Firefox 5, and I remain very grateful to everyone. Just realize that not everyone will use the buttons correctly the first time. We're human, not machines. Merry Christmas to all.