.course {
  padding: 0px 20px 25px 20px;
  background: #F4F4F4;
}

.course .course-title {
  display: flex;
  align-items: center;
  padding-left: 4px;
  height: 50px;
  font-size: 18px;
  font-family: Microsoft YaHei;
  font-weight: bold;
  color: rgba(223, 10, 11, 1);
  line-height: 36px;
}

.course .course-title img {
  padding-right: 20px;
}

.course .course-content {
  display: flex;
  justify-content: space-between;
}

.course .course-content .sysChapterContent {
  width: 769px;
  height: 500px;
  background: #ffffff;
}

.course .course-content .sysChapterContent .rich-text {
  display: none;
  width: 100%;
  height: 100%;
  padding: 40px;
  -ms-overflow-style: none;
  overflow: -moz-scrollbars-none;
  box-sizing: border-box;
  overflow: hidden;
}

.course .course-content .sysChapterContent .rich-text .ql-container {
  border: none;
}

.course .course-content .sysChapterContent .rich-text .ql-editor {
  border: none;
  overflow-y: scroll;
  -ms-overflow-style: none;
  overflow: -moz-scrollbars-none;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  /* Firefox */
  -webkit-box-sizing: border-box;
  /* Safari */
}

.course .course-content .sysChapterContent .rich-text .ql-editor::-webkit-scrollbar {
  width: 6px;
  height: 1px;
}

.course .course-content .sysChapterContent .rich-text .ql-editor::-webkit-scrollbar-thumb {
  background-color: #cccccc;
  border-radius: 3px;
}

.course .course-content .sysChapterContent .video {
  width: 100%;
  height: 100%;
}

.course .course-content .sysChapterContent .video video {
  width: 100%;
  height: 100%;
  outline: none;
}

.course .course-content .course-list {
  width: 350px;
  height: 500px;
  border-bottom: 6px solid #ffffff;
  background: #ffffff;
  border-radius: 5px 5px 0 0;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  /* Firefox */
  -webkit-box-sizing: border-box;
  /* Safari */
}

.course .course-content .course-list .title {
  width: 100%;
  height: 50px;
  line-height: 50px;
  font-size: 18px;
  font-weight: bold;
  color: #ffffff;
  text-align: center;
  background: #DF0A0B;
  border-radius: 5px 5px 0 0;
}

.course .course-content .course-list .list-content {
  margin-top: 6px;
  width: 100%;
  height: 325px;
  overflow-y: scroll;
  -ms-overflow-style: none;
  overflow: -moz-scrollbars-none;
}

.course .course-content .course-list .list-content::-webkit-scrollbar {
  width: 6px;
  height: 1px;
}

.course .course-content .course-list .list-content::-webkit-scrollbar-thumb {
  background-color: #cccccc;
  border-radius: 3px;
}

.course .course-content .course-list .list-content .list-item .course-name {
  position: relative;
  min-height: 48px;
  display: flex;
  justify-content: space-between;
  padding: 0 41px 0 26px;
  line-height: 48px;
  background: #EDEDED;
}

.course .course-content .course-list .list-content .list-item .course-name .name {
  font-size: 18px;
  font-weight: bold;
  color: #DF0A0B;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  cursor: pointer;
}

.course .course-content .course-list .list-content .list-item .course-name .status {
  font-size: 12px;
  color: #F39800;
}

.course .course-content .course-list .list-content .list-item .drop-down {
  position: absolute;
  top: 22px;
  right: 9px;
  transform: rotate(180deg);
  -webkit-transform: rotate(180deg);
  transition: transform .5s;
}

.course .course-content .course-list .list-content .list-item .rotate {
  transform: rotate(0deg);
  -webkit-transform: rotate(0deg);
  transition: transform .5s;
}

.course .course-content .course-list .list-content .list-item .sub-list {
  padding: 6px 0;
}

.course .course-content .course-list .list-content .list-item .sub-list .sub-title-item {
  padding: 0 41px 0 26px;
  display: flex;
  align-items: center;
  height: 40px;
}

.course .course-content .course-list .list-content .list-item .sub-list .is-active {
  background: #f4f4f4;
}

.course .course-content .course-list .list-content .list-item .sub-list .sub-title-item .video-icon {
  width: 30px;
}

.course .course-content .course-list .list-content .list-item .sub-list .sub-title-item .sub-name {
  width: 200px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 14px;
  color: #666666;
  cursor: pointer;
}

.course .course-content .course-list .list-content .list-item .sub-list .sub-title-item .sub-status {
  width: 53px;
  text-align: right;
  font-size: 12px;
  color: #AAAAAA;
}

.course .course-remark {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 18px;
}

.course .course-remark .left {
  font-size: 18px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #DF0A0B;
}

.course .course-remark .middle {
  position: absolute;
  left: calc(50% - 162px);
  display: flex;
  justify-content: space-between;
  width: 264px;
  /* width: 126px; */
  height: 46px;
  line-height: 46px;
  font-size: 16px;
  text-align: center;
  color: #FFFFFF;
}

.course .course-remark .middle.single {
  justify-content: center;
}

.course .course-remark .middle>div {
  display: none;
  width: 126px;
  height: 46px;
  border-radius: 5px;
  cursor: pointer;
  -moz-box-shadow: 5px 5px 5px #EBEBEB;
  /* 老的 Firefox */
  box-shadow: 5px 5px 5px #EBEBEB;
  color: #FFFFFF;
  background: #029cfd;
}

/* .course .course-remark .step {
  color: #666666;
  background: #f4f4f4;
} */

.course .course-remark .right {
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  color: #666666;
}

.course .course-remark .right .number {
  font-size: 18px;
  color: #DF0A0B;
}

.steps {
  padding-top: 38px;
  padding-bottom: 23px;
  display: flex;
  justify-content: center;
}

.steps>div {
  margin: 0 11px;
  width: 126px;
  height: 46px;
  line-height: 46px;
  font-size: 16px;
  text-align: center;
  border-radius: 5px;
  cursor: pointer;
  -moz-box-shadow: 5px 5px 5px #EBEBEB;
  /* 老的 Firefox */
  box-shadow: 5px 5px 5px #EBEBEB;
}

.steps .step-1 {
  color: #666666;
  background: #f4f4f4;
}

.steps .step-2 {
  color: #FFFFFF;
  background: #1c92dc;
}

/* 腾讯视频样式 */
.hide {display: none !important;}
/* 修改播放器 图标 */
.tcp-skin .vjs-big-play-button:hover .vjs-button-icon .draw-fill {
  fill: #D7000F !important;
}
/* /// 播放器右键文字隐藏 */
.tcp-right-click-popup-menu.vjs-menu .vjs-menu-content {display: none !important;} 
/* 通过 css 设置播放器尺寸 这时<video>中的宽高属性将被覆盖*/
#player-container-id{width:100%;height:0;max-width:100%;padding-top:56.25%; /* 计算方式：播放器以16：9的比率显示，这里的值为 9/16 * 100 = 56.25  */}
/* 外部容器也需要是自适应的*/
#wrap{margin:0 auto;width:100%;}
/* 设置logo在高分屏的显示样式 */
@media only screen and (min-device-pixel-ratio:2),only screen and (-webkit-min-device-pixel-ratio:2){.tcp-logo-img{width:50%;}
}
.page-video-content{position:absolute;top:0;right:0;bottom:0;left:0;z-index:9;display:-webkit-flex;display:flex;-webkit-flex-direction:column;flex-direction:column;-webkit-justify-content:space-between;justify-content:space-between;}
.replay_rwap{display:-webkit-flex;display:flex;padding-top:10px;padding-right:10px;-webkit-justify-content:flex-end;justify-content:flex-end;}
.page-video-content.type_c .replay_rwap {position: absolute;right: 0;z-index: 9;}
#replay-btn{display:-webkit-flex;display:flex;color:#fff;font-size:16px;opacity:.7;align-items:center;}
#replay-btn img{margin-right:5px;width:26px;height:26px;}
#replay-btn:hover{opacity:1;cursor:pointer;}
.option_wrap{display:-webkit-flex;display:flex;padding:0 50px 40px;-webkit-justify-content:space-between;justify-content:space-between;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.page-video-content.type_c .option_wrap {width: 100%;height: 100%;padding:0;}
.option_wrap_center{-webkit-justify-content:center;justify-content:center;}
.options_item{margin:0 auto 1vw;width:80%;max-width:400px;height:3vw;border:1px solid;border-radius:2px;color:rgba(255,255,255,0.9);text-align:center;font-size:1.2vw;line-height:3vw;font-weight:800;transition:all .3s;padding: 0 10px;white-space: nowrap;text-overflow: ellipsis;overflow: hidden;background-color: rgba(0,0,0,0.9);}
.options_item:hover{cursor:pointer;transform:scale(1.1);color:rgba(255,255,255,1)}
.page-video-content.type_c .option_wrap .options_item_wrap {display:flex;align-items:flex-end;box-sizing:border-box;}
.page-video-content.type_c .option_wrap .options_item_wrap.pb_20 {padding-bottom: 20px;}
.animated {-webkit-animation-duration: 1s;animation-duration: 1s;-webkit-animation-fill-mode: both;animation-fill-mode: both;}
@-webkit-keyframes fadeIn{0%{opacity:0}100%{opacity:1}}@keyframes fadeIn{0%{opacity:0}100%{opacity:1}}.fadeIn{-webkit-animation-name:fadeIn;animation-name:fadeIn}
@-webkit-keyframes fadeInUp{0%{opacity:0;-webkit-transform:translateY(20px);transform:translateY(20px)}100%{opacity:1;-webkit-transform:translateY(0);transform:translateY(0)}}@keyframes fadeInUp{0%{opacity:0;-webkit-transform:translateY(20px);-ms-transform:translateY(20px);transform:translateY(20px)}100%{opacity:1;-webkit-transform:translateY(0);-ms-transform:translateY(0);transform:translateY(0)}}.fadeInUp{-webkit-animation-name:fadeInUp;animation-name:fadeInUp}
/* 腾讯视频样式 end*/