.content-external {
  width: 100%;
  background-color: #f5f4f4;
}
.content-external .content-container {
  width: 1280px;
  margin: 0 auto;
}
.content-external .content-container .content {
  width: 1200px;
  overflow: hidden;
  margin: 0 auto;
  padding: 90px 0 110px 0;
}
.content-external .content-container .content .left {
  width: 450px;
  float: left;
  margin-right: 50px;
}
.content-external .content-container .content .left img {
  width: 450px;
}
.content-external .content-container .content .right {
  width: 700px;
  float: left;
  line-height: 24px;
  font-size: 14px;
  font-weight: 400;
  color: #444444;
}
.content-external .content-container .content .right :nth-child(1),
.content-external .content-container .content .right :nth-child(4),
.content-external .content-container .content .right :nth-child(6),
.content-external .content-container .content .right :nth-child(7) {
  margin-bottom: 30px;
}
.content-external .content-container .content .right span {
  color: black;
  font-weight: bold;
}
.content-external .content-container .content .right a {
  text-decoration: none;
}
.content-external .content-container .content .right a:hover {
  color: red;
}
.footer-top-external {
  margin-top: 0px;
}
@media only screen and (max-width: 900px) {
  .border-bottom {
    margin-bottom: 10px;
    height: 80px;
  }
  .border-bottom .about-dongri {
    margin-top: -35px !important;
  }
  .border-bottom .about-dongri .investor-relations {
    font-size: 15px!important;
  }
  .border-bottom .navigation #btn2 {
    width: 15% !important;
    border-bottom: 2px solid #bb0007;
  }
  .border-bottom .navigation #btn1 {
    width: 15% !important;
    margin-right: 55% !important;
  }
  .content-external {
    margin-top: 20px !important;
  }
  .content-external .content {
    padding: 20px 0px !important;
  }
  .content-external .content .right :nth-child(1) {
    margin-top: 30px;
  }
}
@media only screen and (max-width: 300px) {
  .border-bottom .navigation #btn2 {
    width: 20% !important;
    margin: 0 5%!important;
  }
  .border-bottom .navigation #btn1 {
    width: 20% !important;
    margin: 0 40% 0 5% !important;
  }
}