@media screen and (min-width: 768px) {

  .ec-productRole .up-d_desc-center {
    width: 100%;
    max-width: 765px;
    margin-left: auto;
    margin-right: auto;
  }

  .ec-productRole .up-d_desc-center img {
    width: auto;
    max-width: 100%;
    height: auto;
  }

}