.h3 {
  font-size: 40px;
  color: var(--color);
}
.about-title {
  font-size: 48px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
}
.yearlist {
  position: relative;
  height: 678px;
  margin: 80px 0 0;
  overflow: hidden;
}
.yearlist .list-view {
  position: absolute;
  height: 100%;
  overflow: hidden;
  font-size: 0;
  white-space: nowrap;
  z-index: 2;
  width: 100%;
}
.yearlist .list-view li {
  position: relative;
  display: inline-block;
  width: calc(100% / var(--count));
  height: 678px;
  cursor: pointer;
  text-align: center;
  overflow: hidden;
}
.yearlist .list-view li div img {
  width: 100%;
  height: 678px;
}
.yearlist .list-view li div:not(:last-child) {
  border-right: 1px solid #fff;
  overflow: hidden;
}
.yearlist .list-view .year {
  position: absolute;
  bottom: 85px;
  left: 0;
  width: 100%;
  padding-bottom: 50px;
  transition: all 0.3s;
}
.yearlist .list-view .year:hover {
  transform: scale(1.1);
}
.yearlist .list-view .year img {
  width: 26px;
  height: 26px;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  transition: all 0.3s;
}
.yearlist .list-view .year span {
  font-size: 30px;
  line-height: 1;
  color: #fff;
}
.yearlist .list-view .year span:last-child {
  font-size: 18px;
}
.yearlist .list-view .year i {
  width: 2px;
  height: 16px;
  display: block;
  margin: 2px auto;
  background-color: transparent;
}
.yearlist .cont {
  position: absolute;
  left: calc(100% / 11);
  right: 0;
  top: 0;
  bottom: 0;
  overflow: hidden;
  z-index: 2;
  background-color: #F4F4F4;
}
.culture-classroom_down_left {
  margin-bottom: var(--side-height);
}
.culture-classroom_down_left img {
  width: 314px;
  height: 107px;
  margin-bottom: -5.5px;
}
.cont_down-icon {
  width: 397px;
  height: 399px;
  position: absolute;
  bottom: 0;
  right: 0;
  z-index: -1;
}
.cont_right-icon {
  width: 780px;
  height: 558px;
  margin: 0 0 0 20px;
}
.overflow_auto .flex__sb:not(:first-child) {
  margin-top: 66px;
}
.overflow_auto .flex__sb {
  margin-top: 66px;
  box-shadow: 0px 0px 12px rgba(0, 0, 0, 0.12);
  margin: 70px 10px 10px 60px;
  padding: 20px 10px 20px 20px;
}
.cont h3 {
  font-size: 30px;
  color: var(--color);
  margin-bottom: 40px;
}
.cont p {
  font-size: 18px;
  color: var(--color);
  line-height: 36px;
  overflow: auto;
  height: 478px;
  padding-right: 10px;
}
.swiper-button {
  width: 60px;
  height: 60px;
  margin: 0 30px;
  transition: all 0.3s;
}
.swiper-button::after {
  font-size: 0;
}
.swiper-button:hover {
  background-position-x: 0px;
}
.swiper-button-prev {
  background: url(../../static/png/swiper-button.png) no-repeat;
  background-position-x: -64px;
  transform: rotate(180deg);
}
.swiper-button-next {
  background: url(../../static/png/swiper-button.png) no-repeat;
  background-position-x: -64px;
}
.swiper-up__conter {
  position: absolute;
  z-index: 11;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.swiper-up__conter h2 {
  color: #fff;
  font-size: 40px;
  transition: all 0.3s;
}
.swiper-up__conter a {
  color: #fff;
  font-size: 18px;
  width: 195px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  background-color: var(--active);
  margin: 36px auto;
  transition: all 0.3s;
  text-decoration: none;
}
.swiper-up__conter a:hover {
  opacity: 0.9;
}
.swiper-up__down {
  position: absolute;
  z-index: 11;
  left: 50%;
  transform: translateX(-50%);
  bottom: 80px;
  align-items: center;
}
.swiper-up__down span {
  color: #fff;
  margin-top: 24px;
}
.swiper-up__down img {
  width: 56px;
  height: 56px;
  animation: turn_around 2s linear infinite;
}