.banner {
  width: 100%;
  height: 550px;
  background: no-repeat center center;
  background-size: cover;
  -webkit-background-size: cover;
}
.banner h6 {
  font-size: 52px;
  color: #1c62b0;
  padding-top: 180px;
  padding-bottom: 30px;
}
.banner p {
  font-size: 28px;
  color: #727171;
  line-height: 44px;
}
.nav-box {
  width: 100%;
  height: auto;
  overflow: hidden;
  background: #e5e5e5;
}
.two-nav {
  width: 82%;
  height: 80px;
  line-height: 80px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}
.two-nav .content {
  width: 100%;
  height: 100%;
  background: #e5e5e5;
  position: absolute;
  left: 0;
  top: 0;
}
.two-nav .content .container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  font-size: 0;
  text-align: center;
}
.two-nav .content .container .child {
  width: 33%;
  height: 100%;
  font-size: 22px;
  color: #444;
  display: inline-block;
  *display: inline;
  *zoom: 1;
  vertical-align: middle;
  overflow: hidden;
  text-align: center;
  white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.two-nav .content .container .child:hover,
.two-nav .content .container .in {
  background: #035cc2;
  color: #fff;
  font-size: 26px;
}
.two-nav .btn {
  width: 42px;
  height: 42px;
  background: #bcbcbc;
  line-height: 42px;
  text-align: center;
  border-radius: 4px;
  -webkit-border-radius: 4px;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto 0;
  cursor: pointer;
}
.two-nav .btn:hover {
  background: #035cc2;
}
.two-nav .left-btn {
  left: 0;
}
.two-nav .right-btn {
  right: 0;
}
.main .history_list .history_list_box .info img{
  width:100%!important;
  height:auto!important;
}
.main {
  width: 93.75%;
  max-width: 1100px;
  height: auto;
  padding: 80px 0 100px;
  overflow: hidden;
  margin: 0 auto 100px;
  position: relative;
}
.main .img_more {
  width: 50px;
  height: 50px;
  background: url(../images/about_us_icon_more.png);
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
  bottom: 0;
  z-index: 5;
  cursor: pointer;
}
.main .history {
  width: 50%;
  height: 100%;
  border-right: 1px dashed #b3b3b3;
  position: absolute;
  left: -1px;
  top: 0;
}
.main .history_list {
  width: 100%;
}
.main .history_list li {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.main .history_list li span {
  width: 25px;
  height: 25px;
  background: url(../images/about_us_icon.png) no-repeat left bottom;
  position: absolute;
  left: 0;
  right: 0;
  top: 30px;
  margin: 0 auto;
  z-index: 33;
}
.main .history_list .history_list_box {
  width: 50%;
  max-width: 418px;
  height: auto;
  background: #f1f1f1;
  float: left;
  border-radius: 6px;
  -webkit-border-radius: 6px;
  position: relative;
  font-size: 14px;
  line-height: 22px;
  color: #666;
}
.main .history_list .history_list_box .info {
  width: 80%;
  margin: 0 auto;
  padding: 40px 0;
}
.main .history_list .history_list_box h4 {
  font-weight: bold;
  font-size: 32px;
  padding-bottom: 16px;
}
.main .history_list li.current .history_list_box {
  float: right;
}
.main .history_list li:hover .history_list_box {
  background: #1c62b0;
  color: #fff;
}
.main .history_list li:hover span {
  background-position: 0 0;
}
.brand {
  padding: 52px 0;
  background: #f5f5f5;
}
.brand h4 {
  height: 48px;
  text-align: center;
  font-size: 34px;
  color: #333;
  line-height: 48px;
  overflow: hidden;
}
.brand h4 span {
  height: 48px;
  padding-right: 3px;
  color: #eb6100;
  font-size: 48px;
  font-weight: bold;
  position: relative;
  top: 5px;
}
.brand ul {
  padding-top: 50px;
  text-align: center;
  font-size: 0;
}
.brand ul li {
  width: 148px;
  height: 166px;
  background: url(../images/about_us_brandbg.png) no-repeat;
  display: inline-block;
  *display: inline;
  *zoom: 1;
  vertical-align: middle;
  overflow: hidden;
  margin-right: 60px;
}
.brand ul li p {
  font-size: 18px;
  width: 88%;
  padding-top: 48px;
  margin: 0 auto;
  line-height: 32px;
  text-align: center;
  color: #444444;
}
.brand ul li:hover p {
  color: #eb6100;
}
.brand ul .nor {
  margin-right: 0;
}
@media (max-width: 639px) {
    .banner {
    height: 200px;
  }
  .banner h6 {
    padding-top: 50px;
    padding-bottom: 6px;
    font-size: 22px;
  }
  .banner p {
    font-size: 14px;
    line-height: 22px;
  }
  .main .history_list .history_list_box {
    width: 100%;
    margin-bottom:4px;
    font-size: 12px;
    max-width: 100%;
  }
  .main .history_list .history_list_box h4{font-size: 24px;padding-bottom: 8px;}
  .main .history_list .history_list_box span {
    display: none;
  }
  .brand ul li {
    margin-right: 10px;
    margin-bottom: 10px;
  }
  .brand ul .nor {
    margin-right: 10px;
  }
  .main .history {
    display: none;
  }
  .brand h4 {
    font-size: 20px;
  }
  .brand h4 span{font-size: 36px;}
  .main .history_list li span {
    display: none;
  }
  .brand ul{padding-top: 20px;}
  .brand ul li{width: 80px;height: 100px;-webkit-background-size: 100% auto;
  background-size: 100% auto;}
  .brand ul li p{font-size: 12px;line-height: 20px;padding-top: 20px;}
  .two-nav .content .container .child {
    font-size: 14px;
  }
  .two-nav .content .container .child:hover,
  .two-nav .content .container .in {
    font-size: 12px;
  }
  .two-nav {
    width: 100%;
    height: 50px;
    line-height: 50px;
  }
  .two-nav .content .container {
    width: 86%;
  }
  .two-nav .btn {
    width: 26px;
    height: 26px;
    line-height: 26px;
  }
  .main{padding-top: 40px;padding-bottom: 40px;margin:0 auto  20px;}
  .main .history_list .history_list_box .info{width: 90%;padding:12px 0;}
  .brand{padding:24px 0;}
  .main .img_more{width:30px;height:30px;line-height:30px;background-size:100% auto;-webkit-background-size:100% auto;}
}
@media (min-width: 640px) and (max-width: 1023px) {
	.banner {
    height: 400px;
  }
  .banner h6 {
    padding-top: 100px;
    padding-bottom:26px;
    font-size: 48px;
  }
  .banner p {
    font-size: 24px;
    line-height: 32px;
  }
  .brand ul li {
    margin-right: 10px;
    margin-bottom: 10px;
  }
  .brand ul .nor {
    margin-right: 10px;
  }
  .main .history_list .history_list_box {
    width: 46%;
  }
  .two-nav .content .container .child {
    font-size: 18px;
  }
  .two-nav .content .container .child:hover,
  .two-nav .content .container .in {
    font-size: 20px;
  }
  .two-nav {
    width: 93.75%;
    height: 70px;
    line-height: 70px;
  }
  .two-nav .content .container {
    width: 86%;
  }
}
@media (min-width: 1024px) and (max-width: 1335px) {
  .brand ul li {
    margin-right: 10px;
  }
}