@media screen and (min-width: 768px) {
  .detail-kv-main-background span {
    background-image: url(../../../img/kumamoto/paradiso/img_kv_pc.jpg);
  }
}
@media screen and (max-width: 767px) {
  .detail-kv-main-background span {
    background-image: url(../../../img/kumamoto/paradiso/img_kv_sp.jpg);
  }
}