.develop-banner{
  position: relative;
  min-height:600px;
  display: block;
  background:url(../image/banner/ht-develop.png) no-repeat center center;
  background-size: cover;
  overflow: hidden;
}
.ht-develop-content{
  padding: 60px 0;
  background-color: #f9f9fa;
}
ul:after {
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
  overflow: hidden;
  content: ".";
}
.history-wrap .cent-wrap{
  width: 80%;
  margin: 0 auto;
  position: relative;
}
.history-wrap .cent-wrap .cent-line{
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 96%;
  border: 1px dashed rgba(61,110,255,0.2);
}
.history-wrap .cent-wrap ul{
  position: relative;
  z-index: 2;
  padding: 0;
  width: 100%;
  margin-bottom: 40px;
}
.history-wrap .cent-wrap li{
  width: 50%;
  float: left;
  position: relative;
  opacity: 1;
  transition: opacity 0.4s ease 0s;
  list-style: none;
  margin-top: 60px;
}
.history-wrap .cent-wrap li:nth-child(1){
  margin-top: 0;
}
.history-wrap .cent-wrap li:nth-child(2){
  margin-top: 268px;
}
.history-wrap .cent-wrap li:nth-child(odd){
  float: left;
}
.history-wrap .cent-wrap li:nth-child(even){
  float: right;
}
.history-wrap .cent-wrap li .cont-box{
  width: calc(100% - 30px);
  position: relative;
  padding: 24px 16px 36px 16px;
  background: #FFFFFF;
  border-radius: 2px;
  border: 1px solid rgba(61,110,255,0.2);
  background-size: 100% 100% !important;
}
.history-wrap .cent-wrap li:nth-of-type(1) .cont-box, .history-wrap .cent-wrap li:nth-of-type(5) .cont-box,
.history-wrap .cent-wrap li:nth-of-type(9) .cont-box{
  background: url("../image/develop/develop-bac1.png") no-repeat center center;
}

.history-wrap .cent-wrap li:nth-of-type(4) .cont-box, .history-wrap .cent-wrap li:nth-of-type(8) .cont-box,
.history-wrap .cent-wrap li:nth-of-type(12) .cont-box, .history-wrap .cent-wrap li:nth-of-type(14) .cont-box {
  background: url("../image/develop/develop-bac3.png") no-repeat center center;
}

.history-wrap .cent-wrap li:nth-of-type(2) .cont-box, .history-wrap .cent-wrap li:nth-of-type(6) .cont-box,
.history-wrap .cent-wrap li:nth-of-type(10) .cont-box{
  background: url("../image/develop/develop-bac2.png") no-repeat center center;
}

.history-wrap .cent-wrap li:nth-of-type(3) .cont-box, .history-wrap .cent-wrap li:nth-of-type(7) .cont-box,
.history-wrap .cent-wrap li:nth-of-type(11) .cont-box, .history-wrap .cent-wrap li:nth-of-type(13) .cont-box,
.history-wrap .cent-wrap li:nth-of-type(15) .cont-box {
  background: url("../image/develop/develop-bac4.png") no-repeat center center;
}

.history-wrap .cent-wrap li:nth-child(odd) .cont-box:before{
  position: absolute;
  top: 4px;
  right: -32px;
  content: '';
  width: 32px;
  height: 1px;
  border-top: 1px dashed rgba(61,110,255,0.2)
}
.history-wrap .cent-wrap li:nth-child(even) .cont-box:before{
  position: absolute;
  top: 4px;
  left: -32px;
  content: '';
  width: 32px;
  height: 1px;
  border-top: 1px dashed rgba(61,110,255,0.2)
}
.history-wrap .cent-wrap li:nth-child(odd) .cont-box{
  margin-left: 0;
  text-align: right;
  margin-right: 30px;
}
.history-wrap .cent-wrap li:nth-child(even) .cont-box{
  margin-right:0;
  text-align: left;
  margin-left: 30px;
}
.history-wrap .cent-wrap li .word{
  font-size: 14px;
  line-height: 14px;
  color: #333333;
  list-style: disc;
}
.history-wrap .cent-wrap li .word div{
  display: block;
  line-height: 20px;
  vertical-align: middle;
  padding-bottom: 16px;
  position:relative;
}
.history-wrap .cent-wrap li:nth-child(odd) .word div{
  padding-right: 10px;
}
.history-wrap .cent-wrap li:nth-child(even) .word div{
  padding-left: 10px;
}
.history-wrap .cent-wrap li .word div:before{
  content: "";
  display: block;
  width:4px;
  height:4px;
  background-color: #000000;
  position: absolute;
  top: 8px;
  border-radius: 50%;

}
.history-wrap .cent-wrap li:nth-child(odd) .word div:before{
  float: right;
  right: 0;
}
.history-wrap .cent-wrap li:nth-child(even) .word div:before{
  float: left;
  left: 0;
}
.history-wrap .cent-wrap li .year{
  font-size: 18px;
  color: #000000;
  line-height: 14px;
  margin-bottom: 16px;
}
.history-wrap .cent-wrap li .point{
  display: inline-block;
  width: 10px;
  height: 10px;
  position: absolute;
  top: 0;
  margin-left: -6px;
  text-align: center;
  border-radius: 50%;
  background: rgba(61,110,255,0.3);
}
.history-wrap .cent-wrap li:nth-child(odd) .point{
  right: -6px;
}
.history-wrap .cent-wrap li:nth-child(even) .point{
  left: 2px
}
.history-wrap .cent-wrap li .point i{
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-top: 2px;
  vertical-align: top;
  border-radius: 50%;
  background: #3D6EFF;
}
.history-wrap .cent-wrap li.show .point i{
  display: inline-block;
}
@media (max-width: 1200px){
  .history-wrap .cent-wrap {
    width: 100%;
  }
}
@media (max-width: 992px){
  .history-wrap .cent-wrap .cent-line{
    height: 98%;
    left: 0;
  }
  .history-wrap .cent-wrap li{
    width: 100%;
    margin-top: 60px;
  }
  .history-wrap .cent-wrap li:nth-child(2){
    margin-top: 60px;
  }
  .history-wrap .cent-wrap li .point{
    left: 2px !important;
  }
  .history-wrap .cent-wrap li:nth-child(odd) {
    float: inherit;
  }
  .history-wrap .cent-wrap li:nth-child(even) {
    float: inherit;
  }
  .history-wrap .cent-wrap li .cont-box{
    margin: 0 0 0 30px !important;
    text-align: left !important;
  }
  .history-wrap .cent-wrap li:nth-child(odd) .cont-box:before{
    left: -32px;
    right: auto;
  }
  .history-wrap .cent-wrap li:nth-child(odd) .word div:before{
    left: 0;
  }
  .history-wrap .cent-wrap li:nth-child(odd) .word div{
    padding-left: 10px;
    padding-right: 0;
  }
}
@media (max-width: 768px){
  .history-wrap .cent-wrap li:nth-child(1) {
    margin-top: 48px;
  }
}
/**  phone  **/
@media (max-width: 576px){
  .history-wrap .cent-wrap {
    width: 100%;
    margin: 0 auto;
  }
  .ht-develop-content {
    padding: 50px 0 40px 0;
  }
  .history-wrap .cent-wrap ul{
    margin-bottom: 0;
  }
  .history-wrap .cent-wrap li .word div{
    padding-bottom: 12px;
    font-size: 12px;
    line-height: 16px;
  }
  .history-wrap .cent-wrap li .cont-box{
    padding: 16px 8px 4px 8px;
  }
  .history-wrap .cent-wrap li:nth-child(2) {
    margin-top: 24px;
  }
  .history-wrap .cent-wrap li{
    margin-top: 24px;
  }
  .history-wrap .cent-wrap li:nth-child(odd) .cont-box{
    background: url(../image/develop/develop-mobile-bac1.png) no-repeat center center !important;
    background-size: 100% 100% !important;
  }
  .history-wrap .cent-wrap li:nth-child(even) .cont-box{
    background: url(../image/develop/develop-mobile-bac2.png) no-repeat center center !important;
    background-size: 100% 100% !important;
  }
}