.history {
  height: 800px;
  background: url(../images/lc_bg.jpg) no-repeat center top;
  overflow: hidden;
  box-sizing: border-box;
  padding-top: 124px;
}
.history .content {
  position: relative;
}
.history .wrapper {
  width: 1200px !important;
  margin: 0 auto;
}
.history h2 {
  margin-bottom: 38px;
}
.history h2 span {
  display: block;
  line-height: 69px;
  font-size: 48px;
  color: #333333;
  font-weight: bold;
}
.history h2 em {
  display: block;
  line-height: 32px;
  font-size: 20px;
  color: #666;
  font-weight: normal;
}
.history .history_nav {
  margin-top: 117px;
  position: relative;
}
.history .history_nav li {
  position: relative;
}
.history .history_nav li i {
  display: block;
  width: 6px;
  height: 6px;
  background: #f47a24;
  border-radius: 50%;
  position: absolute;
  left: 50%;
  margin-left: -3px;
  bottom: 0;
}
.history .history_nav li i:after {
  position: absolute;
  content: "";
  width: 20px;
  height: 20px;
  border: 1px solid #f47a24;
  left: -7px;
  top: -7px;
  border-radius: 50%;
  box-sizing: border-box;
  opacity: 1;
}
.history .history_nav li i:before {
  position: absolute;
  content: "";
  width: 20px;
  height: 26px;
  left: 50%;
  top: -40px;
  margin-left: -10px;
  background: url(../images/lc_dd.png) no-repeat center top;
  opacity: 0;
  transition: 0.5s;
}
.history .history_nav li span {
  display: block;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.2rem;
  color: #555555;
  line-height: 1;
  bottom: 30px;
  font-family: "Roboto";
}
.history .history_nav li.swiper-slide-active i:before {
  opacity: 1;
}
.history .history_nav li.swiper-slide-active span {
  display: none;
}
.history .swiper-button-next,
.history .swiper-button-prev {
  top: 210px;
  width: 3rem;
  height: 3rem;
  cursor: pointer;
  z-index: 300;
}
.history .swiper-button-prev {
  background: url(../images/snext.png) no-repeat center;
  background-size: 3rem 3rem;
  left: -4rem;
}
.history .swiper-button-next {
  background: url(../images/sprev.png) no-repeat center;
  background-size: 3rem 3rem;
   right: -4rem;
}
.history .history_con {
  position: absolute;
  left: 39%;
  top: 0;
}
.history .history_con .swiper-slide {
  opacity: 0 !important;
  transition: 0.5s;
}
.history .history_con .swiper-slide-active {
  opacity: 1 !important;
}
.history .history_con h3 {
  float: left;
  font-size: 1.4rem;
  line-height: 1.8rem;
  color: #f47a24;
  font-weight: bold;
}
.history .history_con p {
  width: 34rem;
  float: left;
  margin-left: 2.5rem;
  font-size: 0.9rem;
  line-height: 1.8rem;
  color: #333;
  /*margin-top: 2rem;*/
}
@media screen and (max-width: 1400px) {
  .history .history_nav .swiper-wrapper {
    margin-left: -76px;
  }
}