.banner {
    background-image: url("../img/Optimised/Services/PreandPostNatal/pre-and-post-banner-o.jpg");
    
}
@media (max-width: 1366px) {
    .banner {
      background-image: url("../img/Optimised/Services/PreandPostNatal/1366/pre-and-post-banner-o.jpg");
    }
  }
  @media (max-width: 768px) {
    .banner{
      background-image: url("../img/Optimised/Services/PreandPostNatal/768/pre-and-post-banner-o.jpg");
    }
  }