.demo-badge {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  background: #6ee7c9; color: #03201a; text-align: center;
  font-size: 11px; font-weight: 700; padding: 5px; font-family: 'Vazirmatn', sans-serif;
}
body { padding-top: 26px; }