.history-wrapper {
  position: relative;
  
}
.history-wrapper .index-title-box {
  margin-bottom: 40px;
}
.history-wrapper .swiper-container {
  margin: 0 -20px;
  padding: 0 20px 30px;
}
.history-wrapper .swiper-box {
  position: relative;
}
.history-wrapper .swiper-box:before {
  content: "";
  height: 3px;
  width: 100%;
  background-color: #d9d9d9;
  position: absolute;
  left: 0;
  top: 156px;
  z-index: 0;
}
.history-wrapper .swiper-slide {
  position: relative;
  height: 400px;
  cursor: pointer;
  padding: 72px 0 120px;
}
.history-wrapper .swiper-slide:nth-child(odd) .base {
  flex-direction: column-reverse;
}
.history-wrapper .swiper-slide:nth-child(odd) .year {
  margin-top: 72px;
  margin-bottom: 0;
}
.history-wrapper .swiper-slide.active .base:before,
.history-wrapper .swiper-slide:hover .base:before {
  background-color: #0f96d7;
}
.history-wrapper .swiper-slide.active .year,
.history-wrapper .swiper-slide:hover .year {
  color: #0f96d7;
}
.history-wrapper .swiper-slide.active .hide-box,
.history-wrapper .swiper-slide:hover .hide-box {
  display: block;
  animation: fadeIn 0.3s ease;
}
.history-wrapper .year {
  font-size: 60px;
  color: #d9d9d9;
  font-family: "bold";
  line-height: 50px;
  margin-bottom: 72px;
  transition: color 0.3s ease;
  -webkit-transition: color 0.3s ease;
  -moz-transition: color 0.3s ease;
  -ms-transition: color 0.3s ease;
  -o-transition: color 0.3s ease;
}
.history-wrapper .desc {
  line-height: 24px;
  height: 48px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  font-size: 16px;
  color: #666;
}
.history-wrapper .base {
  position: relative;
  display: flex;
  display: -webkit-box;
  /* Chrome 4+, Safari 3.1, iOS Safari 3.2+ */
  display: -moz-box;
  /* Firefox 17- */
  display: -webkit-flex;
  /* Chrome 21+, Safari 6.1+, iOS Safari 7+, Opera 15/16 */
  display: -moz-flex;
  /* Firefox 18+ */
  display: -ms-flexbox;
  /* IE 10 */
  flex-flow: wrap;
  text-align: center;
}
.history-wrapper .base:before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  z-index: 1;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 5px solid #fff;
  background-color: #d9d9d9;
  box-sizing: border-box;
  box-shadow: 0px 0px 14px 0px rgba(0, 0, 0, 0.1);
}
.history-wrapper .base div {
  width: 100%;
}
.history-wrapper .hide-box {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: none;
  background-color: #ffffff;
  box-shadow: 0px 0px 14px 0px rgba(0, 0, 0, 0.1);
}
.history-wrapper .title {
  font-size: 18px;
  line-height: 24px;
  color: #0f96d7;
  font-weight: 700;
}
.history-wrapper .pic {
  display:block;
  width:100%;
    height: auto;
  overflow:hidden;
}
.history-wrapper .pic img {
  width:100%;
  height: 270px;
  display:block;
  object-fit: cover;
}
.history-wrapper .pic img:hover {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
  -moz-transform: scale(1.05);
  -ms-transform: scale(1.05);
  -o-transform: scale(1.05);
}
.history-wrapper .info {
  padding: 20px 30px;
  overflow-y: auto;
  max-height: 134px;
}
.history-wrapper .info::-webkit-scrollbar {
  width: 4px;
  background-color: #f7f8f9;
}
.history-wrapper .info::-webkit-scrollbar-thumb {
  background-color: #0f96d7;
}
.history-wrapper .info .desc {
  font-weight: 700;
  line-height: 30px;
  height: auto;
  display: block;
}
.history-wrapper .box-container {
  position: relative;
}
.history-wrapper .swiper-btn {
  display: inline-block;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  position: absolute;
  top: 131px;
  z-index: 1;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center center;
  box-shadow: 0px 0px 14px 0px rgba(0, 0, 0, 0.1);
  transition: background 0.3s ease;
  -webkit-transition: background 0.3s ease;
  -moz-transition: background 0.3s ease;
  -ms-transition: background 0.3s ease;
  -o-transition: background 0.3s ease;
}
.history-wrapper .prev {
  left: -120px;
  background-image: url(../images/prev3.png);
}
.history-wrapper .prev:hover {
  background-image: url(../images/prev4.png);
}
.history-wrapper .next {
  right: -120px;
  background-image: url(../images/next3.png);
}
.history-wrapper .next:hover {
  background-image: url(../images/next4.png);
}