.responsive-image-banner {
  width: 100%;
}

.responsive-image-banner__image {
  width: 100%;
  height: auto;
}

.responsive-image-banner__image--mobile {
  display: block;
}
 .responsive-image-banner__image--desktop {
    display: none;
  }

@media screen and (min-width: 749px) {
  .responsive-image-banner__image--desktop {
    display: block;
  }

  .responsive-image-banner__image--mobile {
    display: none;
  }
}