@media screen and (max-width: 1450px) {
  
  .history-content {
    padding-top: 100px;
  }
  .history-content .year {
    font-size: 9vw;
  }
  .history-info p {
    font-size: 16px;
  }
  .history-item {
    padding-left: 60px;
  }
  .history-years {
    padding: 0 60px;
  }
}
@media screen and (max-width: 1280px) {
 
  .history-content {
    padding-top: 80px;
  }
  .history {
    padding-top: 50px;
    padding-right: 60px;
  }
  .history {
    padding-bottom: 60px;
  }
}
@media screen and (max-width: 1024px) {
  
  .history {
    padding-top: 0;
    padding-right: 5%;
    padding-left: 5%;
  }
  .history-item {
    padding-left: 0;
    padding-top: 20px;
    padding-bottom: 20px;
  }
  .introducts {
    padding-bottom: 40px;
  }
  .history-years {
    padding: 0;
    margin-top: 30px;
  }
  .history-content .year {
    font-size: 80px;
  }
  .history-content {
    padding-top: 50px;
  }
  .history-time strong {
    font-size: 20px;
    width: 70px;
    height: 70px;
    line-height: 70px;
  }
  .history-time span {
    line-height: 72px;
  }
  .history-time i {
    margin-top: 37px;
  }
  .introduct-text strong {
    display: block;
  }
  .history-prev {
    width: 40px;
    height: 40px;
    margin-top: -21px;
  }
  .history-prev:hover:before {
    right: 12px;
  }
  .history-prev:before {
    width: 60px;
    height: 10px;
    background-size: auto 100%;
    right: 12px;
    margin-top: -5px;
  }
}
@media screen and (max-width: 861px) {

  .history-img {
    width: 100%;
  }
  .history-content {
    width: 100%;
    margin-top: 30px;
  }
  .history-years {
    margin-top: 0;
  }
  .history-prev, .history-next {
    display: none !important;
  }
}
@media screen and (max-width: 641px) {
  
  .history-time {
    padding-bottom: 0;
  }
  .history-info p {
    font-size: 14px;
  }
  .year-items.slick-current strong b {
    font-size: 32px;
  }
  .year-items:before {
    right: 0;
    left: 180px;
  }
  .history-content .year {
    font-size: 60px;
  }
  .history {
    padding-bottom: 40px;
  }
}