* {
  margin: 0;
  padding: 0;
  word-wrap: break-word;
}
a {
  text-decoration: none;
}
body {
  background-color: #000000;
  font:normal 12px/22px "microsoft yahei";
}
textarea,
select,
input{
  font:normal 14px/24px "microsoft yahei";
  outline: none;
}
li {
  list-style: none;
}

/*证书*/

.course-cred-popup{
  background: #2f75a1;
  width: 240px;
  position: fixed;
  right: 10%;
  top:10%;
  z-index: 999;
  border-radius: 5px;
  margin-right: 10px;
  padding: 15px;
  line-height: 24px;
  color: #fff;
  display: none;
  -webkit-animation-name: animJelly;
  animation-name: animJelly;
  -webkit-animation-duration: 1s;
  animation-duration: 1s;
  -webkit-animation-timing-function: linear;
  animation-timing-function: linear;
}
.course-cred-popup i{
  font-style: normal;
}
.course-cred-popup.ns-show{
  display: block;
}
.course-cred-popup a {
  color: #e1cf75;
  float: right;
}
.course-cred-popup a:hover {
  color: #e1cf75;
}


.player-header{
  height: 65px;
  background-color: #282828;
  position: relative;
  line-height: 65px;
  padding: 0 30px 0 160px;
}
.player-header__text{
  font-size: 16px;
  color:#fff;
}
.player-header__back{
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 0px;
  line-height: 34px;
  border-radius:0 20px 20px 0;
  position: absolute;
  left:0;
  top:50%;
  margin-top:-18px;
  font-size: 14px;
  color:rgba(255,255,255,0.6);
  padding: 0 25px 0 30px;
  transition: .3s;
  cursor: pointer;
}
.player-header__back::before{
  content: '';
  width: 20px;
  height: 20px;
  background: url(../images/icons.png);
  background-position: -9px -57px;
  position: absolute;
  left:10px;
  top:50%;
  margin-top:-10px;
  opacity: 0.6;
}
.player-header__back:hover{
  background-color: rgba(255,255,255,0.06);
}
.player-header__mode{
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2px;
  position: absolute;
  right: 96px;
  top:50%;
  margin-top: -18px;
}
.player-header__mode li{
  float: left;
  padding: 0 20px;
  line-height: 30px;
  height: 30px;
}
.player-header__mode li a{
  color:#fff;
  font-size: 14px;
}
.player-header__mode .active{
  background-color: #191919;
  border-radius: 20px;
}

.player-header__user-info0{
  display: none;
}
.player-header__user-box0 .player-header__user-info0{
  display: block;
}
.player-header__user-box0 .player-header__user-info1{
  display: none;
}
.player-header__user{
  position: absolute;
  padding:0 15px;
  right: 15px;
  height: 100%;
  top: 0;
}

.player-header__user-avatar{
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border-radius: 50%;
  overflow: hidden;
  margin-top:14px;
}
.player-header__user-avatar img{
  width: 100%;
  display: block;
  height: 100%;
  object-fit: cover;
}
.player-header__user:hover .player-header__user-box{
  display: block;
}
.player-header__user-box{
  width: 400px;
  background-image: url(../images/userboxbg.png);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 50% 50%;
  background-color: #fff;
  position: absolute;
  right: 10px;
  top:62px;
  z-index: 11;
  box-sizing: border-box;
  line-height: 1.7;
  padding-top: 25px;
  border-radius: 6px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  display: none;
}

.player-header__user-box::before{
  content: '';
  border-bottom:5px solid #FFFFFF;
  border-left:5px solid transparent;
  border-right:5px solid transparent;
  position: absolute;
  right: 17px;
  top:-5px;
}
.player-header__user-header{
  position: relative;
  padding-left: 60px;
  min-height: 46px;
  margin: 0 25px;
}
.player-header__user-header .icon-vip,
.player-header__user-header .icon-bindphone{
  width: 16px;
  height: 18px;
  display: inline-block;
  background-repeat: no-repeat;
  background-image: url(../images/icons.png);
  position: relative;
  top:2px;
  margin-left: 3px;
  
}
.player-header__user-header .icon-bindphone{
  background-position: -8px -5px;
}
.player-header__user-header .icon-bindphone1{
  background-position: -24px -5px;
}
.player-header__user-header .icon-vip{
  background-position: -58px -7px;
  top:3px;
}
.player-header__user-header .icon-vip1{
  background-position: -41px -7px;
}
.player-header__user-header .icon-vip2{
  background-position: -92px -7px;
}
.player-header__user-login-text{
  line-height: 56px;
  font-size: 14px;
  color:#999;
}
.player-header__user-btns{
  text-align: center;
  padding: 25px 0 40px 0;
}
.player-header__user-btns a{
  width: 120px;
  height: 32px;
  line-height: 32px;
  display: inline-block;
  margin: 0 10px;
  background-color: #e3e3e3;
  text-align: center;
  border-radius: 20px;
  font-size: 14px;
  color:#666;
}

.player-header__user-btns a:first-child{
  background-color: #ffa23e;
  color:#fff;
}
.player-header__user-name{
  font-size: 16px;
}
.player-header__user-pic{
  width: 46px;
  height: 46px;
  position: absolute;
  left:0;
  top:0;
  border-radius: 50%;
  overflow: hidden;
}
.player-header__user-pic img{
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.player-header__user-desc{
  color:#999;
}
.player-header__user-desc span + span{
  margin-left: 25px;
  
}
.player-header__user-desc span:last-child{
  float: right;
}
.player-header__user-desc  strong{
  font-weight: normal;
  color:#fda829;
}
.player-header__user-desc span a{
  color:#fd702e;
}
.player-header__user-actions{
  padding: 0 25px;
}
.player-header__user-actions ul::after{
  content: '';
  display: block;
  clear: both;
}
.player-header__user-actions li{
  width: 25%;
  float: left;
  text-align: center;
  padding: 25px 0 20px 0;
}
.player-header__user-actions .icon{
  width: 26px;
  height: 26px;
  background-image: url(../images/icons.png);
  background-repeat: no-repeat;
  display: block;
  margin: 0 auto;
}
.player-header__user-actions .icon-learn{
  background-position: -163px -260px;
}
.player-header__user-actions .icon-exam{
  background-position: -78px -260px;
}
.player-header__user-actions .icon-order{
  background-position: -22px -260px;
}
.player-header__user-actions .icon-collect{
  background-position: -134px -260px;
}
.player-header__user-actions a{
  color:#666;
  display: block;
}
.player-header__user-actions a:hover{
  color: #e2ac2d;
}
.player-header__user-actions .text{
  margin-top:5px;
  font-size: 14px;
}
.player-header__user-setup{
  background-color: rgba(255,255,255,0.7);
  border-top: 1px solid rgba(0, 0, 0, 0.07);
  line-height: 40px;
  border-radius: 0 0 6px 6px;
}
.player-header__user-setup ul::after{
  content: '';
  display: block;
  clear: both;
}

.player-header__user-setup a{
  display: inline-block;
  color:#7f7f7f;
  font-size: 14px;
  padding: 0 20px;
}
.player-header__user-setup a:last-child{
  float: right;
}
.player-header__user-setup a:hover{
  color:#e2ac2d;
}

.player-box .empty {
  display: none;
}
.ks-player {
  width: 100%;
  min-width: 1200px;
  height: 100vh;
  background: #4a4b4d;
  font-size: 14px;
  color: #2f3133;
  font-family: Microsoft YaHei;
  position: relative;
  z-index: 10;
  /* overflow: hidden; */
  min-height: 790px;
}
#a1 {
  position: relative;
  width: 100%;
  height: 100%;
}
.plv-liveplayer-flInstall{
  position: absolute;
  top: 0;
}
#a1 audio {
  display: none;
}
.ks-audio-player {
  position: absolute !important;
  width: 340px;
  margin: 0 auto;
  border-radius: 5px;
  background: #fff;
  box-sizing: border-box;
  height: 380px;
  left: 50%;
  margin-left: -170px;
  top: 50%;
  margin-top: -190px;
}
.player-bgline {
  width: 4px;
  height: 100%;
  background: rgba(48, 50, 51, 1);
  position: absolute;
  left: 213px;
  z-index: 1;
}
.player {
  position: absolute;
  width: calc(100% - 320px);
  min-width: 880px;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 10;
  float: left;
}
.player-top {
  padding-bottom: 25px;
  z-index: 10;
}
.player-container {
  height: calc(100vh - 65px);
  min-height: 500px;
  background: #000;
  position: relative;
  padding-right: 470px;
  overflow: hidden;
  transition: .3s;
}
.player-container--packup{
  padding-right: 60px;
}
.player-container--packup .player-right{
  right: -410px;
}
.player-container--packup .player-menu .icon-sq{
  background-position: -111px -103px;
}

.player-left {
  height: calc(100% - 80px);
  position: relative;
}
.player-box {
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 10;
  position: relative;
}

.player-left .player-cover{
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top:0;
}
.player-left .player-cover img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  
}
.player-left .player-cover.blur img{
  filter: blur(30px);
}
.player-left .player-errmsg{
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top:0;
  z-index: 10;
  background-color: rgba(0,0,0,0.8);
}

.player-left .player-errmsg__cont{
  width: 600px;
  position: absolute;
  left:0;
  right: 0;
  margin: 0 auto;
  top:50%;
  margin-top: -80px;
  text-align: center;
  color:#fff;
}

.player-left .player-faceperiod__cont{
  width: 600px;
  position: absolute;
  left:0;
  right: 0;
  margin: 0 auto;
  top:50px;
  height: calc(100% - 100px);
  overflow-y: auto;
  padding:0 20px;
}
.player-left .player-faceperiod__cont::-webkit-scrollbar {
  width: 4px;    
  
}

.player-left .player-faceperiod__cont::-webkit-scrollbar-thumb {
  /*滚动条里面小方块*/
  border-radius: 10px;
  background   :rgba(255,255,255,0);
  
}
.player-left .player-faceperiod__cont::-webkit-scrollbar-track {
  /*滚动条里面轨道*/
  border-radius: 10px;
  background   :rgba(255,255,255,0);
}
.player-left .player-faceperiod__cont:hover::-webkit-scrollbar-thumb{
  background   :rgba(255,255,255,0.2);
}
.player-left .player-faceperiod__cont:hover::-webkit-scrollbar-track{
  background   :rgba(255,255,255,0.1);
}
.player-left .player-faceperiod__text{
  line-height: 24px;
  font-size: 14px;
  color:#fff;
  margin-top: 5px;
}
.player-left .player-faceperiod-title{
  height: 34px;
  line-height: 34px;
  overflow: hidden;
  color:#fff;
  margin-top: 20px;
  font-size: 14px;
  position: relative;
}
.player-left .player-faceperiod-title::after{
  content: '';
  width: 30px;
  height: 1px;
  background-color: #fff;
  position: absolute;
  bottom: 0;
  left: 0;
}
.player-left .player-faceperiod-intro{
  margin-top: 10px;
}
.player-left .player-faceperiod-intro,
.player-left .player-faceperiod-intro p{
  color:#fff;
  font-size: 14px;
}
.player-left .player-faceperiod-intro p{
  padding-top: 10px;
}
.player-left .player-faceperiod-intro img{
  max-width: 100%;
}
.player-left .player-errmsg__text{
  font-size: 24px;
}
.player-left .player-errmsg__btn{
  width: 140px;
  height: 36px;
  line-height: 36px;
  border: 1px solid #fff;
  margin: 0 auto;
  font-size: 16px;
  margin-top: 30px;
  cursor: pointer;
  border-radius: 4px;
}

.player-opcity {
  width: 86%;
  height: 100%;
  box-sizing: border-box;
  margin: 0 7%;
  z-index: 1;
  background-image: url("/SysImg/player/images/play_bg.jpg");
  background-size: cover;
  position: absolute;
  top: 0;
}

.player-prev__btn,
.player-next__btn {
  float: right;
  color:#fff;
  opacity: 0.6;
  margin-left: 40px;
  line-height: 44px;
  position: relative;
}

.player-prev__btn::after,
.player-next__btn::after{
  content: '';
  width: 16px;
  height: 16px;
  background-image: url(../images/icons.png);
  background-repeat: no-repeat;
  position: absolute;
  top:50%;
  margin-top: -8px;
  
}
.player-prev__btn::after{
  background-position: -76px -29px ;
  left:0;
}
.player-next__btn::after{
  right: 0;
  background-position: -76px -63px ;
}

.player-prev__btn{
  padding-left: 20px;
}
.player-next__btn{
  padding-right: 20px;
}


.player-title {
  margin-top: 25px;
  overflow: hidden;
}
.player-title__box {
  width: 232.5px;
  overflow: hidden;
  height: 36px;
  float: left;
}
.player-title .getcred{
  float: right;
  background: #fff;
  border-radius: 5px 0 0 5px;
  padding: 5px 10px;
}
.player-title .getcred a{
  color: rgba(96, 99, 103, 1);
}
.player-title .getcred:hover{
  background: #3c81f9;
}
.player-title .getcred:hover a{
  color: #fff;
}
.player-title__tree {
  height: 30px;
  line-height: 30px;
  background: rgba(159, 161, 166, 1);
  border-radius: 15px;
  float: right;
  margin-top: 3px;
}
.player-title__keshi {
  display: inline-block;
  width: 70px;
  height: 30px;
  background: rgba(48, 50, 51, 1);
  border-radius: 15px;
  color: rgba(120, 124, 130, 1);
  padding-left: 10px;
  position: relative;
}
.player-title__keshi span {
  width: 30px;
  height: 30px;
  background: rgba(60, 129, 249, 1);
  border: 3px solid rgba(48, 50, 51, 1);
  border-radius: 18px;
  float: right;
  margin-top: -3px;
  line-height: 30px;
  text-align: center;
  color: #2f3133;
  z-index: 100;
}
.player-title__word {
  float: left;
  color: rgba(188, 195, 204, 1);
  line-height: 36px;
  margin-left: 15px;
}
.player-bottom__box {
  padding:0 30px;
  height: 44px;
  position: relative;
}
.player-qrcode {
  width: 110px;
  height: 110px;
  padding: 5px;
  background: #fff;
  position: absolute;
  top: -120px;
  z-index: 100;
  display: none;
}
.player-qrcode img {
  width: 100%;
  height: 100%;
}
.player-bottom__item {
  float: left;
  line-height: 44px;
  font-size: 12px;
  color: rgba(188, 195, 204, 1);
  margin: 0 16px;
}
.player-bottom__item img {
  margin-bottom: -3px;
}
.player-bottom__btn {
  width: 78px;
  height: 24px;

  border-radius: 2px;
  text-align: center;
  color: rgba(47, 49, 51, 1);
  line-height: 24px;
  float: right;
  margin: 10px 20px;
  cursor: pointer;
}

.player-right{
  position: absolute;
  width: 470px;
  right: 0;
  top:0;
  height: 100%;
  background-color: #191919;
  box-sizing: border-box;
  padding-left: 61px;
  transition: .3s;
}

.player-menu {
  width: 60px;
  position: absolute;
  left: 0;
  top: 0;
  border-right: 1px solid #000;
  height: 100%;
  background: url(../images/menubg.png) repeat-y;
}
.player-menu ul{
  position: absolute;
  left:0;
  width: 100%;
  top:50%;
  margin-top:-200px;
}
.player-menu__item {
  width: 60px;
  height: 67px;
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  padding-top: 12px;
  box-sizing: border-box;
  border-bottom: 1px solid #242424;
}
.player-menu .icon{
  width: 20px;
  height: 20px;
  margin: 0 auto;
  background-image: url(../images/icons.png);
  background-repeat: no-repeat;
  opacity: 0.6;
}
.player-menu .icon-menu{
  background-position: -4px -102px;
}
.player-menu .icon-talk{
  background-position: -4px -185px;
}
.player-menu .icon-data{
  background-position: -4px -225px;
}
.player-menu .icon-notes{
  background-position: -73px -164px;
}
.player-menu .icon-exam{
  background-position: -73px -133px;
}
.player-menu .icon-sq{
  background-position: -73px -103px;
}
.player-menu  .text{
  line-height: 28px;
}
.curr {
  background: #26292c;
  color:#fff;
}
.curr .icon{
  opacity: 1;
}
/* 导航 */



.player-catalog{
  overflow-y: auto;
  height: 600px;
}
.player-catalog .ks-catalog-title__time span{
  display: none;
}
.player-catalog-title{
  font-size: 16px;
  color:#fff;
  line-height: 36px;
  padding: 10px 20px 0 20px;
}

.player-catalog__count{
  line-height: 40px;
  color:rgba(255,255,255,0.4);
  padding:0 20px;
}
/*滚动条样式*/
.player-catalog::-webkit-scrollbar {
  width: 7px;    
}

.player-catalog::-webkit-scrollbar-thumb {
  /*滚动条里面小方块*/
  border-radius: 10px;
  background   :rgba(255,255,255,0.4);
}
.player-catalog::-webkit-scrollbar-track {
  /*滚动条里面轨道*/
  border-radius: 10px;
  background   :rgba(255,255,255,0.1);
}
.player-catalog .ks-catalog-period{
  background: none;
}
.player-catalog .ks-catalog-period.active .ks-catalog-title{
  background-color: #222121;
  color:#f25130;
}
.player-catalog  .ks-catalog-title{
  border-bottom: 0px;
  font-size: 12px;
  color:#ccc;
  background: none;
}
.player-catalog .ks-catalog-title__try{
  background: #39b378;
  border:0px;
  height: 20px;
  line-height: 20px;
}
.player-catalog .ks-catalog-title__arrow{
  width: 10px;
  height: 30px;
  float: left;
  margin-right: 10px;
}
.player-catalog .ks-catalog-section > .ks-catalog-title{
  background: none;
}
.player-catalog .ks-catalog-section  .ks-catalog-title__th{
  padding-left: 0px;
}
.player-catalog .ks-catalog-chapter > .ks-catalog-title .ks-catalog-title__th{
  font-size: 12px;
  color:#ccc;
  background: none;
  padding-left:20px;
}
.player-catalog  .ks-catalog-title__arrow{
  right: 0px;
  background-size: auto 6px;
}
.player-catalog  .ks-catalog-title:hover{
  background-color: #292929;
}
.player-catalog  .ks-catalog-period:hover .ks-button,
.player-catalog  .ks-catalog-title .ks-button{
  display: none;
}

.player-catalog .ks-catalog-title__th{
  height: 30px;
  line-height: 30px;
}
.player-catalog .ks-catalog-title__lock{
  height: 30px;
}
.player-catalog .ks-catalog-chapter .ks-catalog-period .ks-catalog-title__th{
  padding-left: 40px;
}

.player-catalog .ks-catalog-title__chapter-intro{
  padding-left: 40px;
  color:rgba(255,255,255,0.3);
}
.player-catalog .ks-catalog-section .ks-catalog-title__th--pointer::before{
  background: none;
}

.player-catalog .schedule{
  border: 1px solid #3b3b3b;
  padding: 10px 120px 10px 50px;
  margin: 10px 15px 0 15px;
  background: url(../images/img_bg.png) no-repeat;
  background-size: 100% 100%;
  color:#fff;
  position: relative;
  height: 54px;
  box-sizing: border-box;
}
.player-catalog .schedule-title{
  width: 30px;
  position: absolute;
  left:10px;
  top:10px;
  line-height: 17px;
}
.player-catalog .schedule-lined{
  border-radius: 20px;
  position: absolute;
  left:0;
  top:0;
  height: 100%;
  background-color: #f25130;
}
.player-catalog .schedule-line{
  height: 6px;
  background: #868686;
  border-radius: 20px;
  position: relative;
  margin-top: 5px;
}
.player-catalog .schedule-ksed{
  position: absolute;
  right: 10px;
  top:10px;
}
.player-catalog .schedule-ksed span{
  color:#ea5a3c;
}
.player-tab-course{
  padding: 15px;
}
.player-tab {
  display: none;
}


.tab-course {
  background: #282828;
  overflow: hidden;
  border-radius: 6px;
  padding:15px;
  color: #fff;
}

.tab-course h1 {
  font-size: 14px;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 21px;
  max-height: 42px;
  cursor: pointer;
}

.tab-course__name{
  color:rgba(255, 255, 255, 0.6);
}
.tab-course__comment {
  overflow: hidden;
  line-height: 14px;
  padding:8px 0;
}
.tab-course__comment span {
  float: left;
  font-size: 12px;
  margin-left: 10px;
  color:rgba(255, 255, 255, 0.6);
}
.tab-course__star {
  width: 70px;
  height: 14px;
  background: url("../images/common_btn_star_n.png") no-repeat;
  background-size: contain;
  float: left;
}
.tab-course__star i {
  display: block;
  height: 12px;
  background: url("../images/common_btn_star_s.png") no-repeat;
  background-size: cover;
}

.player-tabs,
.player-tab{
  position: relative;
  height: 100%;
}
.tab-title{
  height: 44px;
  line-height: 44px;
  background-color: #eee;
  padding: 0 20px;
  border-bottom: 1px solid #e3e3e3;
  font-size: 15px;
}
.player-tab__white-body{
  background-color: #fff;
  position: relative;
  height: calc(100% - 45px);
  overflow-y: auto;
  padding: 20px;
  box-sizing: border-box;
}
.player-tab__white-body .tab-title{
  background-color: #eee;
  color:#333;
  padding: 0px 20px;
  height: 50px;
  line-height: 50px;
}


.autonext-bg {
  width: 12px;
  height: 12px;
  border: 1px solid #bcc3cc;
  color: #fff;
  text-align: center;
  font-size: 12px;
  line-height: 14px;
  float: left;
  margin: 15px 5px 0 0;
  cursor: pointer;
}



.player-tips {
  width: 100%;
  height: 100%;
  background: #fff;
  position: relative;
  color: #2f3133;
}
.player-box{
  overflow:hidden;
}
.player-box .empty,
.player-down {
  width: 100%;
  height: 100%;
  position: relative;
  color: #fff;
  background: url(../images/play_bg.jpg) no-repeat;
  background-size: cover;
  position: relative;
  display: block;
  padding:0px;
  box-sizing: border-box;
}
.player-box .empty::after,
.player-down::after{
  content: '';
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.3);
  position: absolute;
  left:0;
  top:0;
}
.player-down span {
  color: rgb(245, 137, 30);
  margin: 0 5px;
  font-size: 26px;
}
.tips-box {
  position: absolute;
  top: 50%;
  margin-top: -104px;
  text-align: center;
  font-size: 22px;
  line-height: 40px;
  width: 100%;
  z-index: 10;
}
.tips-btn {
  line-height: 1;
  font-size: 16px;
  color: #fff;
}
.tips-btn span {
  border-radius: 4px;
  padding: 10px 12px;
  display: inline-block;
  background: #3c81f9;
  cursor: pointer;
}
/* 播放样式 */
.tuwen {
  width: 100%;
  height: 100%;
  overflow: auto;
  background: rgb(245, 247, 250);
  box-sizing: border-box;
  padding: 25px;
  font-size: 14px;
}
.tuwen img {
  max-width: 90%;
}
.yinping {
  width: 100%;
  height: 100%;
  position: relative;
}
.yinping audio {
  position: absolute;
  top: 50%;
  margin-top: -40px;
  left: 50%;
  margin-left: -180px;
}
.empty {
  text-align: center;
  font-size: 14px;
  color: #bbb;
  padding: 150px 0px 40px 0px;
  line-height: 24px;
  background: url(/SysImg/player/images/empty.png) no-repeat 50% 40px;
}




/*组件样式覆盖*/
.player-tab .ks-comment{
  margin: 0px;
}
.player-tab #ks-comment-switch1{
  width: 35px;
  height: 20px;
}
.player-tab  #ks-comment-switch2{
  width: 19px;
  height: 19px;
}
.player-tab #select-teacher{
  width: 120px;
  border: 0px;
  margin-right: 10px;
  background-color: #f6f6f6;
}
.player-tab .ks-comment .ks-submit-btn{
  width: 86px;
}

.player-tab .ks-comment-textarea{
  font-size: 14px;
}

.player-tab #ks-comment__emoji,
.player-tab .ks-comment__expression img,.player-tab .ks-comment__image img{
  width: 20px;
  height: 20px;
}

.player-tab .ks-filter-change-btn{
  background: none;
  font-size: 14px;
  height: 32px;
  line-height: 32px;
  color:#666;
  border-radius: 0px;
}
.player-tab .ks-filter-change-btn.active{
  background: none;
  color:#222;
  border-bottom: 2px solid #222;
}

.cer_btn{
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 15px;
  box-sizing: border-box;
}

.cer_btn .cer_btn_a{
  display: block;
  text-align: center;
  height: 45px;
  line-height: 45px;
  border-radius: 5px;
  font-size: 16px;
  background-color: #f5c921;
  color: #191919;
}

.cer_btn .no_click{
  background-color: #9e9e9e;
  color: rgb(255 255 255 / 50%);
}