firefox userchrome

.mozilla/firefox/4vd8uypc.default-release/chrome/userChrome.css

@@ -1,4 +1,6 @@
-/*The following block hides the horizontal tabs for tree style tabs https://github.com/piroor/treestyletab/wiki/Code-snippets-for-custom-style-rules#for-userchromecss */
+/*The following block hides the horizontal tabs for tree style tabs https://github.com/piroor/treestyletab/wiki/Code-snippets-for-custom-style-rules#for-userchromecss 
+ * enable 'jtoolkit.legacyUserProfileCustomizations.stylesheets' in 'about:config' for this to work*/
+
 #main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar > .toolbar-items {
   opacity: 0;
   pointer-events: none;
@@ -7,20 +9,20 @@
     visibility: collapse !important;
 }
 
-/*remove top white line*/
+/*remove top white line
 #main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar .titlebar-spacer {
         border-inline-end: none;
-}
+}*/
 /*Hide the Tree style Tab header*/
 #sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
   display: none;
 }
 
 /* The following moves the window buttons to the lower bar after removeing horizontal tabs*/
-/* Adding empty space for buttons */
+/* Adding empty space for buttons 
 #nav-bar {
 	margin-right:140px;
-}
+}*/
 
 /* Fix for main menu calling by Alt button */
 #titlebar > #toolbar-menubar {