* {
    margin: 0;
    padding: 0;
  }

  *,
  *:before,
  *:after {
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
  }

  html {
    font-size: 62.5%;
    height: 100%;
  }

  body {
    min-height: 100%;
    line-height: 1.6;
    min-width: 320px;
    position: relative;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -o-user-select: none;
    user-select: none;
    background: #fff;
  }

  body,
  td,
  th {
    color: #000;
    font-family: "Montserrat", sans-serif;
    font-size: 1.4rem;
    line-height: 1.6;
  }

  td,
  th {
    vertical-align: baseline;
  }

  img {
    height: auto;
    max-width: 100%;
    vertical-align: top;
  }

  li {
    list-style: none;
  }

  a {
    color: #000;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease 0s;
  }

  a:hover {
    color: #000;
  }

  p,
  label,
  ul,
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    margin: 0px;
  }

  .p-0 {
    padding: 0px !important;
  }

  .no-border {
    border: none !important;
  }

  .wrapall {
    max-width: 960px;
    margin: 0px auto;
    padding: 20px 15px;
  }

  header h1 {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    display: flex;
    padding-bottom: 20px;
  }

  header img {
    width: 180px;
  }

  section {
    padding-bottom: 20px;
  }

  .header,
  .content_img {
    align-items: center;
    display: flex;
    padding-bottom: 15px;
  }

  .header {
    padding-top: 20px;
  }

  .header h2 {
    font-size: 2rem;
  }

  .nav {
    display: flex;
    padding-left: 20px;
  }

  .nav li a {
    margin-right: 15px;
    display: block;
    color: #0070c9;
    line-height: 1.2;
    font-size: 1.6rem;
  }

  .nav li a.active {
    border-bottom: 2px solid #0070c9;
  }

  .content_box {
    display: none;
  }

  .content_box.active {
    display: block;
  }

  .content_img {
    border-bottom: 1px solid #ccc;
  }

  .content_img li {
    margin: 0px 10px 10px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
  }

  .content_img li:nth-child(4n) {
    margin-right: 0px;
  }

  .content_img li:nth-child(4n - 3) {
    margin-left: 0px;
  }

  .content_des {
    border-bottom: 1px solid #ccc;
    padding: 30px 0px 0px;
  }

  .content_des p,
  .content_des ul {
    padding-bottom: 20px;
  }

  .content_des dl {
    display: flex;
    flex-wrap: wrap;
  }

  .content_des dl dt,
  .content_des dl dd {
    padding-bottom: 15px;
  }

  .content_des dl dt {
    text-align: right;
    width: 150px;
  }

  .content_des dl dd {
    padding-left: 30px;
    width: calc(100% - 150px);
  }

  .btn_dl {
    display: block;
    text-decoration: none;
    background: #670302;
    width: 250px;
    border-radius: 5px;
    text-align: center;
    color: #fff;
    font-size: 1.8rem;
    padding: 10px;
    margin-bottom: 20px;
    cursor: pointer;
    text-transform: uppercase;
    font-weight: bold;
  }

  .btn_dl:hover {
    color: #fff;
    opacity: 0.8;
  }

  #main-android {
    display: none;
  }

  @media screen and (max-width: 767px) {
    .content_img li {
      margin: 0px 2px;
      border-radius: 5px;
    }

    .content_des {
      padding-top: 10px;
    }

    .content_des dl dt {
      width: 110px;
    }

    .content_des dl dd {
      width: calc(100% - 110px);
    }

    .header h2 {
      font-size: 1.6rem;
    }

    header h1 {
      font-size: 2.2rem;
    }
  }