/* hide top tabs */
#TabsToolbar {
  visibility: collapse !important;
  margin-bottom: 21px !important;
}
#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
  visibility: collapse !important;
}

/*
 * Bookmarks toolbar is visible only on new tab page, just like Chrome.
 */

#main-window #PersonalToolbar {
  visibility: collapse !important;
}

#main-window[title^="about:newtab"] #PersonalToolbar,
#main-window[title^="New Tab"] #PersonalToolbar,
#main-window[title^="Nightly"] #PersonalToolbar,
#main-window[title^="Mozilla Firefox"] #PersonalToolbar,
#main-window[title^="Firefox"] #PersonalToolbar,
#main-window[title^="新标签页"] #PersonalToolbar,
#main-window[title^="Customize Firefox"] #PersonalToolbar {
  visibility: visible !important;
}