@media screen and (max-width:480px) {

  header .title {
    top: 0px;
    left: 10px;
  }
  header .navBtn {
    top: 20px;
    right: 20px;
  }
  header .mainNav {
    padding-top: 150px;
  }
  header .mainNav ul {
    width: 180px;
    margin: 0 auto;
  }

  .topContents .leftColumn h2 a {
    font-size: 38px;
  }
  .topContents .leftColumn {
    width: 100%;
    min-width: auto;
  }

  .workContents .row .Item {
    padding: 30px 0;
  }
  .workContents .row .Item img {
    margin-right: auto;
  }
  .workContents .row .text h4 {
    font-size: 22px;
  }

  .contactContents .contactItem span {
    width: 85px;
  }
  .contactContents .contactItem a {
    margin-left: 140px;
  }
  .contactContents .contactItem a::before {
    left: -135px;
    width: 130px;
  }
  
  footer .innerline .links {
    width: calc(130px * 3);
    margin: 0;
  }
  footer.setHeight {
    height: auto;
    min-height: calc(var(--dvh, 1vh) * 100);
    padding-top: 90px;
    padding-bottom: 50px;
  }
  footer address h3 {
    width: 145px;
  }
  footer address,
  footer .copyright {
    width: calc(130px * 3);
    margin: 55px 0 0;
  }

}

@media screen and (max-width:440px) {

  footer .innerline .links,
  footer address,
  footer .copyright {
    width: calc(130px * 2);
  }
}

@media screen and (max-width:570px) {

  header .navBtn.selected {
    border: 1px solid #fff;
  }
  header .navBtn.selected .item {
    background-color: #fff;
  }
}