@media screen and (max-width: 1200px) {

  /* body{
        min-width: auto;
    } */
  .header {
    height: 113px;
    display: flex;
    z-index: 2;
  }

  .nav {
    position: fixed;
    height: 100vh;
    width: 100vw;
    display: none;
    box-sizing: border-box;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    z-index: 1;
    top: 0;
    left: 0;
    padding-right: 23px;
    font-size: 36px;
    backdrop-filter: blur(30px);
    background: rgba(0, 0, 0, 0.4);
  }

  .nav a {
    margin-bottom: 42px;
  }

  .nav_button {
    display: block;
  }

  .close_button {
    display: block;
  }

  .nav .active {
    color: #fff;
  }

  .nav .active::after {
    content: '';
    display: inline-block;
    position: absolute;
    background: #A38B4F;
    width: 141px;
    height: 19px;
    right: 0;
    top: 38px;
  }

  .main {
    z-index: 1;
  }

  .main_item {
    min-height: 100%;
  }

  .main_content {
    width: 100%;
    padding: 0;
  }

  #home {
    padding: 40px 0 0;
    height: auto;
    width: 90%;
    margin: 0 auto;
  }

  #home .discription_1 {
    font-size: 50px;
    font-weight: 900;
    line-height: 59px;
    width: auto;
  }

  #home .discription_1 .decorate::after {
    display: none;
  }

  #home .discription_2 {
    font-size: 20px;
    line-height: 24px;
    margin-top: 10px;
    width: 256px;
  }

  #about {
    padding: 0;
    width: 90%;
    height: auto;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  #about .board {
    flex-direction: column;
    margin-top: 12px;
  }

  #about .board>div {
    margin-right: 0;
    position: relative;
    width: 70vw;
    margin-top: 38px;
  }

  #about .title {
    font-size: 50px;
    line-height: 80px;
    height: 160px;
  }

  #about .title::before {
    display: none;
  }

  #portfolio {
    padding: 0;
    height: auto;
    width: 90%;
    margin: 0 auto;
  }

  #portfolio .board {
    padding: 24px 9px;
  }

  #portfolio .board .item {
    width: 100px;
    height: 104px;
  }

  #portfolio .title {
    font-size: 50px;
    margin-left: 0;
  }

  #portfolio .title::before {
    display: none;
  }

  #portfolio .board .item {
    margin: 0;
  }

  #portfolio .board {
    width: auto;
    height: auto;
  }

  #portfolio .content {
    display: none;
    justify-content: space-between;
  }

  #portfolio .current {
    display: flex;
    justify-content: space-between;
  }

  #news {
    flex-direction: column;
    padding: 0;
    width: 90%;
    margin: 0 auto;
    height: auto;
    align-items: baseline;
    justify-content: flex-start;
  }

  #news .content {
    flex-direction: column;
  }

  #news .content .right {
    margin-left: 0;
    margin-top: 32px;
  }

  #news .title {
    font-size: 50px;
    margin: 0;
  }

  #contact {
    flex-direction: column;
    width: 90%;
    margin: 0 auto;
    height: auto;
    align-items: baseline;
    justify-content: flex-start;
  }

  #contact .left .title {
    font-size: 50px;
    margin: 0;
  }

  #contact .discription {
    display: none;
  }

  #contact .rectangle {
    display: none;
  }

  #contact .right {
    width: 100%;
    height: 340px;
    padding: 36px 32px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  #contact .right .title {
    flex-direction: column;
  }

  #contact .right .email {
    font-size: 18px;
  }


  #contact .right .title .email_img_1 {
    display: block;
  }

  #contact .right .title .email_img_2 {
    display: none;
  }

  .footer .mid {
    display: none;
  }
}