.history_a {
  padding-bottom: 160px;
}
.history_a .wrap1600 {
  padding-top: 110px;
  position: relative;
}
.history_a .wrap1600 .hibox {
  margin: 0 auto;
  position: relative;
  width: 1160px;
}
.history_a .wrap1600 .hibox .year {
  position: relative;
  z-index: 20;
}
.history_a .wrap1600 .hibox .year .num {
  width: 98px;
  height: 98px;
  line-height: 98px;
  text-align: center;
  background: url(../images/hi_01.png) no-repeat left center;
  margin: 0 auto;
  color: #ee6639;
  font-size: 24px;
}
.history_a .wrap1600 .hibox .year ul {
  padding-bottom: 100px;
}
.history_a .wrap1600 .hibox .year ul li {
  padding-top: 70px;
  margin-bottom: 70px;
  position: relative;
}
.history_a .wrap1600 .hibox .year ul li .month {
  margin: 0 auto;
  width: 70px;
  height: 28px;
  background-color: #ee6639;
  -webkit-border-radius: 14px;
     -moz-border-radius: 14px;
          border-radius: 14px;
  text-align: center;
  line-height: 28px;
  color: #fff;
  position: relative;
}
.history_a .wrap1600 .hibox .year ul li .month::after {
  content: "";
  display: block;
  width: 90px;
  height: 1px;
  background-color: #e5e5e5;
  position: absolute;
  left: -90px;
  top: 50%;
}
.history_a .wrap1600 .hibox .year ul li .contentbox {
  position: absolute;
  left: 0;
  top: 0;
  width: 456px;
  background-color: #b3b3b3;
  z-index: 20;
}
.history_a .wrap1600 .hibox .year ul li .contentbox .imgbox {
  overflow: hidden;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
  background: rgba(0, 0, 0, 0);
  position: relative;
}
.history_a .wrap1600 .hibox .year ul li .contentbox .imgbox img {
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.history_a .wrap1600 .hibox .year ul li .contentbox .imgbox::after {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  border: 3px solid transparent;
  border-bottom: none;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.history_a .wrap1600 .hibox .year ul li .contentbox .text {
  padding: 22px;
  line-height: 26px;
  font-size: 18px;
  color: #333333;
  text-align: center;
  background: #f5f5f5;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.history_a .wrap1600 .hibox .year ul li .contentbox:hover .imgbox {
  background: #000000;
}
.history_a .wrap1600 .hibox .year ul li .contentbox:hover .imgbox img {
  opacity: .8;
  -webkit-transform: scale(1.1);
     -moz-transform: scale(1.1);
      -ms-transform: scale(1.1);
          transform: scale(1.1);
}
.history_a .wrap1600 .hibox .year ul li .contentbox:hover .imgbox::after {
  border-color: #ee6639;
}
.history_a .wrap1600 .hibox .year ul li .contentbox:hover .text {
  background: #ee6639;
  color: #fff;
}
.history_a .wrap1600 .hibox .year ul .evenli {
  margin-bottom: 173px;
}
.history_a .wrap1600 .hibox .year ul .evenli .month::after {
  left: 100%;
}
.history_a .wrap1600 .hibox .year ul .evenli .contentbox {
  left: auto;
  right: 0;
}
.history_a .wrap1600 .hibox::after {
  content: "";
  display: block;
  width: 1px;
  height: 100%;
  position: absolute;
  left: 50%;
  top: 0;
  background-color: #e5e5e5;
  z-index: 1;
}
.history_a .wrap1600 .add {
  width: 98px;
  margin: 0 auto;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
  cursor: pointer;
}
.history_a .wrap1600 .add:hover {
  -webkit-transform: rotate(360deg);
     -moz-transform: rotate(360deg);
      -ms-transform: rotate(360deg);
          transform: rotate(360deg);
}
@media (max-width: 1440px) {
  .history_a {
    padding-bottom: 80px;
  }
  .history_a .wrap1600 {
    padding-bottom: 80px;
  }
}
@media (max-width: 1366px) {
  .history_a .wrap1600 {
    padding-top: 60px;
  }
  .history_a .wrap1600 .hibox {
    width: 1060px;
  }
  .history_a .wrap1600 .hibox .year ul li .contentbox {
    width: 406px;
  }
  .history_a .wrap1600 .hibox .year ul li .contentbox .text {
    font-size: 14px;
    line-height: 26px;
  }
}
@media (max-width: 1280px) {
  .history_a {
    padding-bottom: 60px;
  }
  .history_a .wrap1600 .hibox {
    width: 996px;
  }
  .history_a .wrap1600 .hibox .year ul li .contentbox {
    width: 380px;
  }
  .history_a .wrap1600 .hibox .year ul li .contentbox .text {
    padding: 12px;
    font-size: 16px;
  }
}
@media (max-width: 1024px) {
  .history_a .wrap1600 .hibox .year ul li .contentbox {
    width: 320px;
  }
  .history_a .wrap1600 .hibox .year ul li .contentbox .text {
    padding: 12px;
    font-size: 14px;
    line-height: 24px;
  }
}