@media screen and (max-width: 767.999px) {
  #main_img_area {
    height: 64vw;
    padding: 33.3vw 0 0 30px;
  }
  .invoice_contents {
    padding: 55px 30px 60px;
  }
  .invoice_contents section#invoice_content01 h2 {
    font-size: 1.8rem;
    margin-top: 40px;
  }
  .invoice_contents section#invoice_content01 p {
    line-height: 1.71;
    margin-top: 18px;
  }
  .invoice_contents section#invoice_content01 .invoice_info {
    padding: 8px 16px;
    margin: 16px 0 24px;
  }
  .invoice_contents section#invoice_content01 .invoice_info dl {
    padding: 8px 8px;
  }
  .invoice_contents section#invoice_content01 .invoice_info dl dt {
    margin-bottom: 0.25em;
  }
  .invoice_contents section#invoice_content01 .invoice_info dl dd {
    padding-left: 1.5em;
  }
}