body::before{content:"CUSTOM CSS OK"; position:fixed; top:0; left:0; z-index:99999; background:#000; color:#fff; padding:6px 10px; font-size:12px;}

/* FIX: Offcanvas Tabs -> solo mostrar el tab-pane activo */
#offcanvas .tab-content > .tab-pane{
  display: none !important;
}

#offcanvas .tab-content > .tab-pane.active,
#offcanvas .tab-content > .tab-pane.show{
  display: block !important;
}