@media screen and (max-width: 500px) {
  body {
    overflow-x: hidden;
  }

  .pc {
    display: none;
  }
  .mo {
    display: block;
  }

  /*price_process*/
  .price_contents .price_process li {
    display: block;
    border: 1px solid #d4d4d4;
  }

  .price_contents .price_process .img_box {
    width: 100%;
    padding: 30px 0;
  }

  .price_contents .price_process .txt_box {
    border-left: 0;
  }

  .price_contents .price_process li span.num {
    top: 10px;
    left: 10px;
  }
}