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