@media (max-width: 768px) {
  #header_ad {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    height: 120px !important;
    width: 100% !important;
    z-index: 999999999 !important;
    background-color: #fff !important;
  }

  .container-header-two {
    top: 120px !important;
    z-index: 999999998 !important;
  }

  body {
    margin-top: 120px !important;
  }
}