.marquiz__button {
  position: fixed !important;
  left: 16px !important;
  bottom: 80px !important; /* подняли выше меню */
  top: auto !important;
  right: auto !important;

  font-family: 'TildaSans', Arial, sans-serif !important;
  font-size: 16px !important;
  font-weight: 500 !important;

  z-index: 999999 !important;
}