.navigation-background {
  height: auto;
}
.subLine {
  border-bottom: 2px solid #c00e18;
}
.border-bottom {
  margin: 0 auto;
  border-bottom: 2px solid #f5f5f5;
}
.border-bottom .breadcrumb-navigation {
  position: relative;
  width: 1200px;
  height: 80px;
  margin: 0 auto;
  color: #a3a3a3;
}
.border-bottom .breadcrumb-navigation .about-dongri {
  position: absolute;
  margin-top: -40px;
  width: 150px;
}
.border-bottom .breadcrumb-navigation .about-dongri:nth-child(1) {
  color: #fff;
  font-size: 18px;
  font-weight: bold;
  width: auto;
}
.border-bottom .breadcrumb-navigation .about-dongri .about-p {
  width: 150px;
  height: 16px;
  margin-top: 5px;
  border-left: 5px solid #c00e18;
}
.border-bottom .breadcrumb-navigation .breadcrumb {
  height: 80px;
  width: 400px;
  float: left;
  line-height: 80px;
}
.border-bottom .breadcrumb-navigation .navigation {
  height: 80px;
  float: right;
}
.border-bottom .breadcrumb-navigation .navigation .btn {
  height: 80px;
  float: right;
  line-height: 80px;
  text-align: center;
  margin: 0 10px;
  color: #a3a3a3;
  text-decoration: none;
}
.border-bottom .breadcrumb-navigation .navigation .btn:hover {
  color: #000000;
}
.border-bottom .breadcrumb-navigation .SubNavigation-line {
  position: absolute;
  width: 70px;
  border-bottom: 2px solid #bb0007;
  margin-top: 80px;
  transition: left 0.3s;
}
@media only screen and (max-width: 900px) {
  .breadcrumb {
    display: none;
  }
  .navigation {
    float: left!important;
    width: 100%!important;
  }
  .navigation .btn {
    font-size: 12px;
    margin: 0 5%!important;
  }
  .SubNavigation-line {
    width: 0!important;
  }
}
@media only screen and (max-width: 300px) {
  .navigation {
    float: left!important;
    width: 100%!important;
  }
  .navigation .btn {
    font-size: 12px;
    width: 25%!important;
    margin: 0!important;
  }
}