.l-contents::before {
  background: url(/assets/images/50th/Rbies_HIROBA2.jpg);
  background-size: cover;
  background-position: center top;
}

@media screen and (min-width: 768px) {
  .l-contents::before {
    height: auto;
    aspect-ratio: 71/20;
  }

  .l-container {
    padding-top: 290px;
  }
}

@media screen and (max-width: 767px) {
  .l-contents {
    padding-top: 110px;
  }

  .l-contents::before {
    height: 210px;
  }
}