Hello, You can do it with Classic Theme Restorer. https://addons.mozilla.org/hu/firefox/addon/classicthemerestorer/ --------------------------------------------------------------------------------------------------- See also: *https://support.mozilla.org/kb/common-questions-after-updating-to-new-firefox *https://support.mozilla.org/kb/learn-more-about-the-design-of-new-firefox *https://support.mozilla.org/kb/how-to-make-new-firefox-look-like-old-firefox *https://support.mozilla.org/kb/what-happened-to-the-add-on-bar *Tabs On Bottom: https://addons.mozilla.org/firefox/addon/tabs-on-bottom/ *The Addon Bar (restored): https://addons.mozilla.org/firefox/addon/the-addon-bar/