#main_banner1 picture {
  aspect-ratio: 720 / 920;
}


@media (min-width: 797px) and (max-width: 978px) {
  #main_banner1 picture {
    aspect-ratio: 1139 / 600;
  }
}


@media (min-width: 979px) {
  #main_banner1 picture {
    aspect-ratio: 1920 / 770;
  }
}