.about-develop {
  padding-top: 80px;
}
.about-develop .container {
  text-align: center;
}
.about-develop .container h1 {
  margin: 0;
  font-size: 40px;
  color: #333;
  line-height: 60px;
  font-weight: bold;
}
.about-develop .container h3 {
  font-size: 24px;
  margin-top:10px;
  color:#333;
  line-height: 32px;
}
.about-develop .container .history {
  position: relative;
  margin-top:80px;
  padding-top: 80px;
  padding-bottom: 150px;
}
.about-develop .container .history .cir {
  width: 18px;
  height: 18px;
  border: 2px solid #DDE2E6;
  border-radius: 50%;
  margin: 0 auto;
}
.about-develop .container .history .history-list li {
  width: 100%;
  margin-top:80px;
  display: flex;
  justify-content: flex-start;
}
.about-develop .container .history .history-list li:nth-child(even){justify-content: flex-end;}
/* .about-develop .container .history .history-list li:nth-of-type(1) {
  margin-top: 180px;
}
.about-develop .container .history .history-list li:nth-of-type(2) {
  margin-top: 420px;
}
.about-develop .container .history .history-list li:nth-of-type(3) {
  margin-top: 355px;
}
.about-develop .container .history .history-list li:nth-of-type(4) {
  margin-top: 355px;
}
.about-develop .container .history .history-list li:nth-of-type(5) {
  margin-top: 355px;
}
*/
.about-develop .container .history .history-list li .content {
  position: relative;
  width:50%;
  padding-right: 72px;
  display: flex;
  align-items: center;
  justify-content:space-between;
}
.about-develop .container .history .history-list li:nth-child(even) .content{
    padding-right: 0;
    padding-left: 72px;
    flex-direction: row-reverse;
}
.about-develop .container .history .history-list li .content .img-box {
  width: 124px;
  height: 124px;
  border-radius: 50%;
  overflow: hidden;
}
.about-develop .container .history .history-list li .content .img-box img {
  width: 100%;
  display: block;
}
.about-develop .container .history .history-list li .content .text-box{
    width:calc(100% - 160px);
    text-align: right;
}
.about-develop .container .history .history-list li:nth-child(even) .content .text-box {
  text-align: left;
}
.about-develop .container .history .history-list li .content .text-box h5 {
  font-size: 24px;
  line-height: 32px;
  color:#000;
  position: relative;
}
.about-develop .container .history .history-list li .content .text-box ul li {
  font-size: 16px;
  line-height: 28px;
  width: 100%;
  margin: 0;
  color: #878787;
  margin-top:12px;
}
.about-develop .container .history .history-list li .content .circular {
  box-shadow: 0 0 0 4px #fff inset;
  background-color: #DDE2E6;
  position: absolute;
  right:-81px;
  top:7px;
}
.about-develop .container .history .history-list li:nth-child(even) .content .circular{right:auto;left:-81px;}


.about-develop .container .history .start {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background-color: #fff;
}
.about-develop .container .history .end {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}
.about-develop .container .history::after {
  content: "";
  display: block;
  width: 2px;
  height: 100%;
  background-color: #F4F5F7;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: -1;
 }
@media (max-width: 1080px) {
    .about-develop {
    padding-top: 48px;
    }
    .about-develop .container h1 {
    font-size: 24px;
    line-height: 40px;
    }
    .about-develop .container h3 {
    font-size: 16px;
    line-height: 24px;
    }
    .about-develop .container .history {
    margin-top:40px;
    padding-top: 40px;
    padding-bottom: 80px;
    }
.about-develop .container .history .history-list li {
  margin-top:40px;
}


.about-develop .container .history .history-list li .content {
  padding-right: 36px;
}
.about-develop .container .history .history-list li:nth-child(even) .content{
    padding-right: 0;
    padding-left: 36px;
}
.about-develop .container .history .history-list li .content .img-box {
  width: 80px;
  height: 80px;
}
.about-develop .container .history .history-list li .content .text-box{
    width:calc(100% - 100px);
}
.about-develop .container .history .history-list li .content .text-box h5 {
  font-size: 16px;
  line-height: 24px;
}
.about-develop .container .history .history-list li .content .text-box ul li {
  font-size: 14px;
  line-height: 20px;
  margin-top:8px;
}
.about-develop .container .history .history-list li .content .circular {
  right:-45px;
  top:3px;
}
.about-develop .container .history .history-list li:nth-child(even) .content .circular{right:auto;left:-45px;}

}

@media (max-width: 640px) {
    .about-develop {
    padding-top: 40px;
    }
    .about-develop .container h1 {
    line-height: 32px;
    }
    .about-develop .container .history .history-list li {
    margin-top:32px;
    }
    .about-develop .container .history .start {
    left: -6px;
    transform: translateX(0);
    }
    .about-develop .container .history .end {
    left: -6px;
    transform: translateX(0%);
    }
    .about-develop .container .history::after {
    width: 1px;
    left: 0;
    transform: translateX(0%);
    }
    .about-develop .container .history .cir {
    width: 12px;
    height: 12px;
    border: 1px solid #DDE2E6;
    }

    .about-develop .container .history .history-list li .content {
        width:100%;
    padding-right: 0;
    padding-left: 24px;
    flex-direction: row-reverse;
    }
    .about-develop .container .history .history-list li:nth-child(even) .content{
        padding-right: 0;
        padding-left: 24px;
    }
    .about-develop .container .history .history-list li .content .img-box {
    width: 60px;
    height: 60px;
    }
    .about-develop .container .history .history-list li .content .text-box{
        width:calc(100% - 80px);
        text-align: left;
    }
    .about-develop .container .history .history-list li .content .circular {
    right:auto;
    left:-30px;
    top:6px;
    }
.about-develop .container .history .history-list li:nth-child(even) .content .circular{right:auto;left:-30px;}

}
/*@media (max-width: 1200px) {
  .about-develop .container .history .history-list li .content .circular-fl {
    top: 15px;
    left: -47px;
  }
  .about-develop .container .history .history-list li .content .circular-fr {
    top: 15px;
    right: -47px;
  }
}
@media (max-width: 991px) {
  .about-develop .container .history .history-list li {
    width: 100%;
    margin-top: 100px !important;
  }
  .about-develop .container .history .history-list li .content .img-box {
    float: right;
  }
  .about-develop .container .history .history-list li .content .text-box {
    text-align: left !important;
    float: left;
    margin-left: 70px;
  }
  .about-develop .container .history .history-list li .content .text-box ul li {
    margin-top: 0 !important;
  }
  .about-develop .container .history .history-list li .content .circular {
    left: 40px;
    right: unset;
    transform: translateX(-50%);
  }
  .about-develop .container .history .start {
    left: 40px;
  }
  .about-develop .container .history::after {
    left: 40px;
  }
}
@media (max-width: 510px) {
  .about-develop {
    padding-top: 40px;
  }
  .about-develop .container h1 {
    font-size: 26px;
  }
  .about-develop .container h3 {
    font-size: 22px;
  }
  .about-develop .container .history {
    padding-bottom: 60px;
  }
  .about-develop .container .history .history-list li {
    width: 100%;
  }
  .about-develop .container .history .history-list li .content .img-box {
    float: right;
    width: 90px;
    height: 90px;
  }
  .about-develop .container .history .history-list li .content .text-box {
    text-align: left !important;
    float: left;
    margin-left: 40px;
  }
  .about-develop .container .history .history-list li .content .text-box h5 {
    font-size: 26px;
  }
  .about-develop .container .history .history-list li .content .text-box ul li {
    font-size: 12px;
    line-height: 24px;
  }
  .about-develop .container .history .history-list li .content .circular {
    left: 20px;
    right: unset;
    transform: translateX(-50%);
  }
  .about-develop .container .history .start {
    left: 20px;
  }
  .about-develop .container .history::after {
    left: 20px;
  }
} */