.list_video {
  background: #f1f2f3;
  padding-top: 40px;
  padding-bottom: 40px;
}
.list_video img {display: block;}
.list_video .ui_nav {font-size: 14px; color: #333;}
.list_video .ui_nav a {
  display: inline-block;
  font-size: 14px;
  color: #333;
  margin: 0 8px;
}
.list_video .ui_nav a:hover {
  color: #39a4ec;
  text-decoration: underline;
}
.list_video .ui_nav span {
  display: inline-block;
  font-size: 14px;
  color: #333;
  margin: 0 8px;
}
.list_video .ui_main {
  margin-top: 10px;
}
.list_video .ui_main .ui_content {
  -webkit-box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
  -moz-box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
  -ms-box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
  -o-box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
  box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1);
  width: 1200px;
  background: #fff;
  padding: 40px 20px;
}
.list_video .ui_main .ui_content li {
  margin-bottom: 40px;
  float: left;
  margin-left: 13px;
  width: 280px;
}
.list_video .ui_main .ui_content li:first-child,.list_video .ui_main .ui_content li:nth-child(5),.list_video .ui_main .ui_content li:nth-child(9) {
  margin-left: 0;
}
.list_video .ui_main .ui_content li a {
  display: block;
}
.list_video .ui_main .ui_content li a .img_container {
  width: 280px;
  height: 186px;
  position: relative;
  overflow: hidden;
}
.list_video .ui_main .ui_content li a .img_container .ui_layer {
  width: 280px;
  height: 186px;
  position: absolute;
  top: 0;
  left: 0;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0) 100%);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#00000000,endColorstr=#7F000000);
}
.list_video .ui_main .ui_content li a .img_container .ui_layer .iconfont {
  font-size: 60px;
  color: #fff;
  display: block;
  text-align: center;
  margin-top: 63px;
  opacity: .8;
  filter: alpha(opacity=80);
  transition: all 0.6s;
  -webkist-transition: all 0.6s;
  -moz-transition: all 0.6s;
  -ms-transition: all 0.6s;
  -o-transition: all 0.6s;
}
.list_video .ui_main .ui_content li a p {
  font-size: 18px;
  color: #333;
  line-height: 18px;
  margin-top: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  height: 18px;
}
.list_video .ui_main .ui_content li a:hover .ui_layer {
  background: none;
}
.list_video .ui_main .ui_content li a:hover .ui_layer .iconfont {
  opacity: 1;
  color: #fff;
}
.list_video .page_list {
  overflow: hidden;
  margin-top: 60px;
}
.list_video .page_list .w1200 {
  display: flex;
  display: -webkit-flex;
  display: -moz-flex;
  display-ms-: flex;
  display: -o-flex;
  justify-content: center;
}
.list_video .page_list ul { display: inline-block;}
.list_video .page_list ul .thisclass {
  font-weight: bold;
  padding: 0 10px;
  border: none;
  color: #666;
}
.list_video .page_list ul li {
  float: left;
  margin-right: 10px;
  box-sizing: border-box;
  text-align: center;
  line-height: 30px;
}
.list_video .page_list ul li a {
  display: block;
  font-size: 14px;
  box-sizing: border-box;
  padding: 0 10px;
  border: 1px solid #666666;
  color: #333;
  text-align: center;
  line-height: 30px;
}
.list_video .page_list ul li a:hover {
  border-color: #39a4ec;
  color: #39a4ec;
}