Firefox sidebar tabs

Some notes about firefox with sidebar tabs.

Taken from Xilin Sun's Firefox: Hide Native Tabs and Titlebar article.

1. Install Tree Style Tab.

2. Go to about:config and set:

   1. toolkit.legacyUserProfileCustomizations.stylesheets to true.
   2. browser.tabs.inTitlebar to 0.

3. Go to about:support and click on Open Directory next to Profile Directory.

4. Create a chrome folder if it doesn't exist.

5. Create a userChrome.css file in the chrome folder.

6. Add the following to the userChrome.css file:

   /* Hide tab bar */
   #TabsToolbar {
     visibility: collapse !important;
   }
   
   /* Hide sidebar header */
   #sidebar-header {
     visibility: collapse !important;
   }
   

7. Restart Firefox.