.nav-content {
  position: fixed;
  width: 1200px;
  top: 0;
  z-index: 999;
}
.main .content-list {
  margin: 30px 0;
}
.main .content-list .tab-nav {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-align-content: center;
  -ms-flex-line-pack: center;
  align-content: center;
  border: 1px solid #dddddd;
  border-radius: 5px;
  overflow: hidden;
  background-color: #eeeeee;
}
.main .content-list .tab-nav a {
  flex: 1;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-align-content: center;
  -ms-flex-line-pack: center;
  align-content: center;
  font-size: 16px;
  color: #535353;
  text-align: center;
  padding: 10px 15px;
  transition: 0.5s;
}
.main .content-list .tab-nav a.active,
.main .content-list .tab-nav a:hover {
  background-color: #358ff0;
  color: #ffffff;
}
.main .content-list .list-content,
.main .content-list list-all {
  margin-top: 25px;
}
.main .content-list .list-content ul,
.main .content-list list-all ul {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-align-content: center;
  -ms-flex-line-pack: center;
  align-content: center;
  width: 100%;
  height: 100%;
  flex-wrap: wrap;
}
.main .content-list .list-content ul:after,
.main .content-list list-all ul:after {
  content: "";
  width: 386px;
}
.main .content-list .list-content ul li,
.main .content-list list-all ul li {
  position: relative;
  width: 386px;
  height: 184px;
  overflow: hidden;
  margin-top: 20px;
  border-radius: 5px ;
}
.main .content-list .list-content ul li:nth-child(1),
.main .content-list list-all ul li:nth-child(1),
.main .content-list .list-content ul li:nth-child(2),
.main .content-list list-all ul li:nth-child(2),
.main .content-list .list-content ul li:nth-child(3),
.main .content-list list-all ul li:nth-child(3) {
  margin-top: 0;
}
.main .content-list .list-content ul li a,
.main .content-list list-all ul li a {
  display: block;
  width: 100%;
  height: 100%;
}
.main .content-list .list-content ul li a img,
.main .content-list list-all ul li a img {
  width: 386px;
  height: 184px;
}
.main .content-list .list-content ul li a .hierarchy,
.main .content-list list-all ul li a .hierarchy {
  transition: 1s;
  opacity: 0;
  position: absolute;
  left: 0;
  top: 0;
  width: 356px;
  height: 164px;
  background: rgba(0, 0, 0, 0.7);
  padding: 10px 15px;
}
.main .content-list .list-content ul li a .hierarchy h2,
.main .content-list list-all ul li a .hierarchy h2 {
  transition: 1s;
  position: absolute;
  top: -55px;
  left: 0;
  width: 90%;
  padding: 0 5%;
  color: #ffffff;
  font-size: 24px;
  text-align: center;
  margin-bottom: 5px;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}
.main .content-list .list-content ul li a .hierarchy .introduction,
.main .content-list list-all ul li a .hierarchy .introduction {
  transition: 1s;
  position: absolute;
  width: 90%;
  padding: 0 5%;
  left: 0;
  top: 55px;
  height: 80px;
  line-height: 25px;
  color: #ffffff;
  font-size: 13px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  opacity: 0;
}
.main .content-list .list-content ul li a .hierarchy .type,
.main .content-list list-all ul li a .hierarchy .type {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-align-content: center;
  -ms-flex-line-pack: center;
  align-content: center;
  position: absolute;
  bottom: 20px;
  left: 0;
  width: 90%;
  padding: 0 5%;
  color: #ffffff;
  font-size: 12px;
  margin-top: 15px;
  transition: 0.5s;
}
.main .content-list .list-content ul li a .hierarchy .type span,
.main .content-list list-all ul li a .hierarchy .type span {
  transition: 1s;
}
.main .content-list .list-content ul li a .hierarchy .type span.watch,
.main .content-list list-all ul li a .hierarchy .type span.watch {
  position: absolute;
  left: -80px;
  padding-left: 25px;
  background: url("../img/liulan_2.png") no-repeat center left;
  background-size: 20px auto ;
}
.main .content-list .list-content ul li a .hierarchy .type span.time,
.main .content-list list-all ul li a .hierarchy .type span.time {
  position: absolute;
  right: -80px;
}
.main .content-list .list-content ul li a:hover .hierarchy,
.main .content-list list-all ul li a:hover .hierarchy {
  opacity: 1;
}
.main .content-list .list-content ul li a:hover .hierarchy h2,
.main .content-list list-all ul li a:hover .hierarchy h2 {
  top: 15px;
}
.main .content-list .list-content ul li a:hover .introduction,
.main .content-list list-all ul li a:hover .introduction {
  opacity: 1;
}
.main .content-list .list-content ul li a:hover .type span.watch,
.main .content-list list-all ul li a:hover .type span.watch {
  left: 25px;
}
.main .content-list .list-content ul li a:hover .type span.time,
.main .content-list list-all ul li a:hover .type span.time {
  right: 25px;
}
.main .content-list .list-content {
  display: none;
}
.fixed {
  width: 1200px;
}
#pages {
  margin: 70px auto!important;
}