.sidebar-ad {
  display: none;
}

@media (min-width: 1300px) {
  .container-12 {
    margin-left: 0 !important;
  }

  .sidebar-ad {
    display: block;
    position: absolute;
    top: 0;
    left: 320px;
  }
}


@media (min-width: 1600px) {
  .container-12 {
    margin-left: auto !important;
  }
}