vertical_bookmarks_toolbar.css: Make PlacesToolbar flow vertically

chrome/vertical_bookmarks_toolbar.css

@@ -31,6 +31,7 @@ See the above repository for updates as well as full license text. */
     height: 100vh;
   }
   
+  #PlacesToolbar,
   #PersonalToolbar >  #personal-bookmarks > #PlacesToolbar > hbox{
     -moz-box-orient: vertical !important;
   }