*{
  padding: 0;
  margin: 0;
}
li{
  list-style: none;
}
.kcbg {
  margin: 17px auto 11px;
  width: 1200px;
  height: 174px;
  background: url(../../imge/kechen.png);
}

.kechen_xq {
  width: 1200px;
  margin: 28px auto 0;
  min-height: 450px;
}

.kechen_xq .kec_fenlei {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  box-sizing: border-box;
  padding: 4%;
  box-shadow: -1px 0px 20px 0px rgba(191, 191, 191, 0.3);
}
.kechen_xq .kec_fenlei span {
  flex: 1;
  text-align: center;
  min-width: 150px;
  max-width: 200px;
  font-size: 16px;
  font-family: Microsoft YaHei;
  color: #000000;
  margin: 5px;
  padding: 12px;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  box-shadow: 0px 2px 2px 0px rgb(122 153 195 / 17%);
}
.kechen_xq .kec_fenlei .major-item:hover {
  color: #005aa7;
}
.kechen_xq .kec_fenlei a {
  cursor: pointer;
  display: inline-block;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #000000;
  margin: 16px 27px;
}

.kechen_xq .kec_fenlei .a_color {
  text-align: center;
  background: #005aa7;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: bold;
  color: #ffffff;
}
.kechen_xq .kechen_zy {
  margin: 40px auto 0;
  width: 98%;
}
.kechen_xq .kechen_zy .pess_h2_letf {
  width: 100%;
}
.kechen_xq .kechen_zy .pess_h2_letf ul {
  display: flex;
  flex-wrap: wrap;
}
.kechen_xq .kechen_zy .pess_h2_letf ul li {
  border-radius: 10px;
    margin: 2%;
    width: 29%;
    text-align: center;
    padding: 20px;
    background: #fafcff;
    box-shadow: 0px 4px 21px 0px rgb(122 153 195 / 17%);
    display: block;
    text-decoration: none;
    box-sizing: border-box;
}
.kechen_xq .kechen_zy .pess_h2_letf ul li .touxiang {
  margin-bottom:  20px;
  width: 100%;
  height: 153px;
}
.kechen_xq .kechen_zy .pess_h2_letf ul li p {
  font-size: 18px;
  font-family: Microsoft YaHei;
  font-weight: bold;
  color: #13324e;
  width: 100%;
}
.kechen_xq .kechen_zy .pess_h2_letf ul li span {
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #949494;
}
.kechen_xq .kechen_zy .pess_h2_letf ul li hr {
  width: 90%;
  margin-left: 5%;
  margin-top: 10px;
    margin-bottom: 10px;
}

.kechen_xq .kechen_zy .pess_h2_letf ul li .fenge {
  width: 1px;
  height: 16px !important;
}
.kechen_xq .kechen_zy .pess_h2_letf ul li .renshu {
  display: flex;
  justify-content: center;
}
.kechen_xq .kechen_zy .pess_h2_letf ul li .renshu .renshu_btn {
  width: 114px;
  height: 33px;
  line-height: 30px;
  text-align: center;
  background-color: #005aa7;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: bold;
  color: #ffffff;
  cursor: pointer;
}
.fonter {
  margin-top: 600px;
  width: 100%;
  height: 330px;
  background: #bfbfbf;
}

/* 视频 */
.video-wrapper {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 710px;
  height: 330px;
  padding-bottom: 30px;
  text-align: right;
  background-color: #333333;
}
video,
video:focus,
video:hover {
  border: none;
}
/* .close-wrapper {
  display: flex;

} */
.video-close {
  width: 25px;
  height: 25px;
  margin-top: 5px;
  margin-right: 5px;
  font-size: 20px;
  color: #fff;
}

.all {
  padding: 0 12px;
}
a,
a:hover,
a:focus {
  text-decoration: none;
}

/* 专业详情页 */
.lesson {
  /* margin-top: 20px; */
  min-height: 80vh;
  padding: 20px;
}
.topbox {
  width: 1200px;
  padding: 15px;
  height: 350px;
  margin: 0px auto;
  display: flex;
  background-color: white;
  zoom: 1;
}
.topbox .letf {
  position: relative;
  float: left;
  width: 580px;
  height: 320px;
  overflow: hidden;
}
.topbox .letf img {
  width: 100%;
  min-height: 320px;
}
.topbox .letf .placeholder_image {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid #f5f5f5;
  font-size: 20px;
  font-family: KaiTi;
}
.topbox .right {
  position: relative;
  margin-left: 30px;
  float: left;
  width: 560px;
}
.topbox .right .classtopitem {
  font-size: 16px;
  padding-bottom: 30px;
  border-bottom: 1px solid #eee;
  margin-top: 20px;
  color: #888;
}
.topbox .right .classtopitem .icon-inils01 {
  background-position: -365px -516px;
  background-image: url(../imge/icon.png);
  vertical-align: middle;
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: 8px;
}
.topbox .right .classtopitem .icon-inils02 {
  background-position: -415px -516px;
  background-image: url(../imge/icon.png);
  vertical-align: middle;
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: 8px;
}
.topbox .right .classtopitem .icon-inils03 {
  background-position: -465px -516px;
  background-image: url(../imge/icon.png);
  vertical-align: middle;
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: 8px;
}
.topbox .right .techer {
  margin-top: 30px;
  display: flex;
}
.topbox .right .classtopitem .l1 {
  float: left;
  width: 84px;
  line-height: 14px;
}
.topbox .right .classtopitem .l2 {
  float: left;
  width: 60px;
  color: #999;
  line-height: 14px;
}
.topbox .right .buy {
  margin-top: 120px;
  text-decoration: none;
  width: 105px;
  height: 38px;
  border-radius: 2px;
  float: right;
  text-align: center;
  font-size: 16px;
  line-height: 40px;
  margin-left: 10px;
  border: solid 1px #00bed4;
  background-color: #00bed4;
  color: #fff;
}

.bottom {
  margin: 20px auto 20px;
  width: 1200px;
  zoom: 1;
  display: flex;
  justify-content: space-between;
}
.bot_letf {
  float: left;
  width: 860px;
  background: white;
}
.bot_letf .classmain-hd {
  height: 58px;
  background-color: #fff;
  border-bottom: 0;
}
.bot_letf .classmain-hd a {
  text-decoration: none;
}
.show {
  border-bottom: solid 2px #00bed4;
  background-color: #fff;
  color: #00bed4 !important;
}
.bot_letf .classmain-hd a:hover {
  border-bottom: solid 2px #00bed4;
  background-color: #fff;
  color: #00bed4;
}
.bot_letf .classmain-hd ul {
  height: 56px;
  border-bottom: 1px solid #edf2f2;
  padding: 0 15px;
}
.bot_letf .classmain-hd li {
  float: left;
  margin-right: 20px;
  width: 100px;
  text-align: center;
  list-style: none;
}
.bot_letf .classmain-hd li a {
  display: block;
  color: #333;
  font-size: 16px;
  line-height: 54px;
}
.bot_letf .classmain-bd {
  padding: 20px 35px;
  background-color: #fff;
  min-height: 50px;
}
.bot_letf .classmain-bd .course {
  margin: 20px auto;
}
.bot_letf .classmain-bd .catalog {
  padding-left: 30px;
  padding-right: 30px;
}

.bot_right {
  float: right;
  width: 320px;
}
.bot_right .classsideitem {
  /* margin-bottom: 30px; */
  background-color: #fff;
}
.bot_right .classsideitem .classsidetit {
  margin: 0 auto;
  border-bottom: solid 1px #edf2f2;
  font-size: 16px;
  line-height: 58px;
  height: 58px;
  text-indent: 20px;
}
.bot_right .classsideitem .classsidecon {
  padding: 20px 16px;
}
.bot_right .classsideitem .classsidecon li {
  list-style: none;
}
.bot_right .classsideitem .classsidecon .class_jg_dl dt {
  width: 292px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto;
}
.bot_right .classsideitem .classsidecon .class_jg_dl dt img {
  width: 296px;
  height: 80%;
}
.bot_right .classsideitem .classsidecon .class_jg_dl dd h3 a {
  font-size: 16px;
  line-height: 20px;
  color: #333;
  display: block;
  text-align: center;
}
.bot_right .classsideitem .classsidecon .class_jg_txt {
  margin: 10px 20px;
  color: #888;
  font-size: 14px;
}
.bot_right .classsideitem .classsidecon .class_jg_ul {
  overflow: hidden;
  height: 60px;
  border-top: 1px solid #eeeeee;
  border-bottom: 1px solid #eee;
  background: #fafeff;
  margin: 0 20px;
  padding: 0;
}
.bot_right .classsideitem .classsidecon .class_jg_ul li {
  float: left;
  width: 50%;
  color: #666;
  text-align: center;
  font-size: 14px;
  margin-top: 10px;
}
.catalog .mul {
  height: 80px;
  border-bottom: 1px solid #eee;
  position: relative;
}
.catalog .ml-list {
  font-size: 16px;
  font-family: Alibaba-PuHuiTi-R;
  font-weight: 400;
  border-bottom: 1px solid #eee;
  color: rgba(59, 59, 59, 1);
  line-height: 80px;
  margin-left: 10px;
}
.catalog .ml-list:hover {
  background-color: #f6fafd;
  color: #00bed4;
}
.catalog .two-tit {
  height: 80px;
  line-height: 80px;
  position: relative;
}
.catalog .sjx-two {
  position: absolute;
  left: 717px;
  top: 40px;
}
.catalog .ml-list .flish-box {
  text-align: center;
  width: 130px;
  height: 80px;
  float: right;
}
.catalog .ml-list .flish-box .begin {
  text-decoration: none;
  margin-top: 22px;
  width: 90px;
  display: inline-block;
  line-height: 40px;
  height: 40px;
  text-align: center;
  border-radius: 15px;
  background: #00bed4;
  color: white;
  cursor: pointer;
}

.catalog .ml-list .two {
  float: right;
  width: 20px;
  margin-right: 20px;
  cursor: pointer;
  position: relative;
}

.catalog .ml-list .two .imgpos {
  position: absolute;
  top: 62px;
  left: 50%;
  display: none;
  z-index: 999999;
  width: 100px;
  height: 116px;
  margin-left: -50px;
  border: 1px solid #00bed4;
  background: #fff;
}
.catalog .ml-list .two .imgpos img {
  width: 100%;
  height: 100%;
}
.catalog .ml-list .two:hover #imgpos {
  display: block;
}
.raise {
  height: 120px;
}
@media (max-width:1080px) {
  .lesson{
    width: 100%;
    box-sizing: border-box;
    padding: 15px;
  }
  .kechen_xq {
    width: 100%;
    box-sizing: border-box;
    margin: 0 0 70px 0;
  }
  .kechen_xq .kec_fenlei{
    box-sizing: border-box;
  }
  .kec_wrapper,
  .kechen_xq .kechen_zy .pess_h2_letf ul li .yxq,
  .kechen_xq .kechen_zy .pess_h2_letf ul li hr,
  .catalog .ml-list .two img{
    display: none;
  }
  .kechen_xq .kechen_zy{
    margin: 10px auto 0;
    width: 100%;
  }
  .kechen_xq .kechen_zy .pess_h2_letf ul li{
    width: 46%;
    padding: 5px;
    box-sizing: border-box;
    min-height: 180px;
    border-radius: 4px;
  }
  .kechen_xq .kechen_zy .pess_h2_letf ul li .touxiang{
    height: 100px;
    margin-bottom: 10px;
  }
  .kechen_xq .kechen_zy .pess_h2_letf ul li p{
    font-size: 1.8vh;
    height: 40px;
  }
  .kechen_xq .kechen_zy .pess_h2_letf ul li .renshu{
    margin-bottom: 10px;
  }
  .kechen_xq .kechen_zy .pess_h2_letf ul li .renshu .renshu_btn{
    width: unset;
    height: unset;
    padding: 8px 13px;
    font-weight: 500;
    font-size: 2vh;
    line-height: unset;
    border-radius: 4px;
  }
  .topbox{
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    height: fit-content;
    padding: unset;
  }
  .bottom{
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 100px;
  }
  .topbox .letf,.topbox .right{
    width: 100%;
    height: fit-content;
    margin: 0;
  }
  .bot_letf{
    width: 100%;
  }
  .bot_right,
  .classtopitem,.techer,
  .catalog .ml-list .two{
    display: none;
  }
  .topbox .letf img{
    min-height:180px;
  }
  .topbox .right .buy{
    margin: 0;
  }
  .bot_letf .classmain-bd{
    padding:unset;
  }
  .bot_letf .classmain-bd .catalog{
    padding: 0;
  }
  .catalog .ml-list{
    height: 80px;
    margin: 0;
    display: flex;
    align-items: center;
  }
  .catalog .ml-list .three{
    width: 55%;
    display: inline-block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 14px;
    }
    .catalog .ml-list .flish-box{
      width: 30%;
      }
      .catalog .ml-list .flish-box .begin{
        width: 100%;
      }
  .bot_letf .classmain-hd ul{
      padding: unset;
      display: flex;
      align-items: center;
      justify-content: center;
  }
  .bot_letf .classmain-hd li{
      margin-right: 0;
  }
  .catalog .ml-list{
      margin-left: 0;
  }
  .topbox .right .buy {
      text-decoration: none;
      width: 80px;
      height: 35px;
      border-radius: 5px;
      float: right;
      text-align: center;
      font-size: 1.8vh;
      line-height: 35px;
      margin-left: 10px;
      border: solid 1px #00BED4;
      background-color: #00BED4;
      color: #fff;
  }
  .bot_letf .classmain-bd img{
    width: 100%;
    height: 100%;
    display: block;
  }
}