Hi Maybe it would be better to ask advice at this unofficial German forum. *https://www.camp-firefox.de/forum/forum/15-firefox-allgemein/ *https://support.mozilla.org/de/kb/get-community-support ---- Note that you would need to use code in userChrome.css to get a multi-row Bookmarks Toolbar. *https://github.com/MrOtherGuy/firefox-csshacks/blob/master/chrome/multi-row_bookmarks.css See also: *https://www.userchrome.org/what-is-userchrome-css.html *https://www.userchrome.org/how-create-userchrome-css.html In Firefox 69 and later you need to set this pref to true on the <b>about:config</b> page to enable userChrome.css and userContent.css in the chrome folder. *toolkit.legacyUserProfileCustomizations.stylesheets = true *https://www.userchrome.org/firefox-changes-userchrome-css.html