.banner-ad-wrapper {
  background: #fff;
  padding: 15px;
  margin: 0;
  text-align: center;
}
.banner-ad-wrapper .banner-ad-area {
  margin: 0 auto;
}

@media (max-width: 768px) {
    .banner-ad-wrapper.banner-ad-desktop {
        display: none;
    }
}

/* Hero element + CTA === */

@media (min-width: 768px) {
  .banner-ad-wrapper.banner-ad-mobile {
      display: none;
  }
}