@media (max-width: 1300px) and (min-width: 1200px) {
  .fb_dialog_content iframe {
      bottom: 60px!important;
  }
}
@media (max-width: 1120px) and (min-width: 992px) {
  .fb_dialog_content iframe {
    bottom: 60px!important;
  }
}
@media (max-width: 767px) {
  .fb_dialog_content iframe {
    bottom: 60px!important;
    right: 0px!important;
    margin-right: 10px!important;
  }
}