- click settings>general and scrollodown to config editor - search for toolkit.legacyUserProfileCustomizations.stylesheets and change to true - then you need a folder named 'chrome' in profile, and a userChrome.css file in the folder (with content shown below). - exit and restart TB and it should work, although I've sometimes found I have to restart TB twice to see changes in userChrome.css - Below is content for userChrome.css

/*  #######    */
@namespace html url("http://www.w3.org/1999/xhtml");

#toolbar-menubar {
  order: 1;             
}

unified-toolbar {
  order: 2;             
}

#tabs-toolbar {
  order: 3;              
}

thank you--will try that but it should be just a drag and drop or option for us non technical ones.

I created a question in the forum so that people can use it. It saves needing to type everything each time.

• https://support.mozilla.org/en-US/questions/1422908

It includes some images that may help.

It's never going to be an option. I've asked and so have many others. This offers an explanation why it's not going to be considered regardless of how many people want it because it is logical to have the main menu bar at the top.

• https://thunderbird.topicbox.com/groups/beta/T1e491c1adeb509bf-M4c94be1d8be1017f0978c49f

There are many requests in the Bugzilla forum.

• https://bugzilla.mozilla.org/show_bug.cgi?id=1822991

Note it says 'wontfix'