.courses-study-view{
  background-color: #fff;
  border-radius: 4px;
  overflow: hidden
}
.courses-study-view .paly-view{
  width: 100%;
  height: 486px;
  position: relative;
  background-color: black;

}
.courses-study-view .paly-view video{
  width: 100%;
  height: 100%
}
.courses-study-view .paly-view  .play-btn{
  position: absolute;
  width: 40px;
  height: 40px;
  top: 50%;
  left: 50%;
  margin-top: -20px;
  margin-left: -20px
}
.courses-title{
  color: rgba(50, 50, 51, 1);
  margin-top: 24px;
  font-size: 18px;
  line-height: 25px;
  padding: 0 16px
}
.courses-publish-info {
  color: rgba(100, 101, 102, 1);
  line-height: 20px;
  margin-top: 8px;
  padding: 0 16px
}
.courses-publish-info span{
  color: #646566
}
.courses-publish-info .publish-time{
  padding: 0 8px
}

.publish-time{
  color: rgba(100, 101, 102, 1);
  line-height: 20px;
  margin-top: 8px;
  padding: 0 16px
}


.course-discussion{
  padding: 0 16px;
  border-bottom: none !important
}
.course-discussion .module-title-view{
  border-bottom: 1px solid #EBEDF0;
}
.course-discussion .module-title-view .module-title{
  padding-bottom: 13px;
  border-bottom: 2px solid #2654FF;
  display: inline-block;
  margin-bottom: -1px;
}
.course-discussion .module-content{
  margin-top: 24px;
}
.course-discussion .communites-answer-first-item {
  margin-bottom: 24px;
  border: none
}
.course-discussion .user-logo-view{
  width: 40px;
  height: 40px;
  border-radius: 100%;
  overflow: hidden
}
.course-discussion .user-other-info-view{
  margin-left: 16px
}
.course-discussion .user-name{
  color: rgba(50, 50, 51, 1);
  font-weight: 600;
  line-height: 20px
}
.course-discussion .publish-time{
  color: rgba(100, 101, 102, 1);
  font-size: 12px;
  line-height: 17px;
  margin-top: 2px;
  padding: 0
}
.course-discussion .answer-content{
  color: rgba(50, 50, 51, 1);
  margin-top: 12px;
  line-height: 20px
}
.course-discussion .operation-list-view{
  margin-top: 15px
}
.course-discussion .operation-list-view button{
  margin-right: 24px
}
.course-discussion .operation-list-view button:last-child{
  margin-right: 0
}
.course-discussion .operation-list-view button img{
  height: 12px;
  width: auto
}
.course-discussion .operation-list-view button p{
  margin-left: 6px;
  color: rgba(100, 101, 102, 1);
  font-size: 12px
}
.course-discussion .communites-answer-second-list{
  margin-top: 16px;
  background-color: #F7F8FA;
  padding: 0 16px;
  border-radius: 4px
}
.course-discussion .communites-answer-second-list .list-group-item{
  background-color: transparent;
  padding: 16px 0;
  border-bottom: 1px solid rgba(235, 237, 240, 1)
}
.course-discussion .communites-answer-second-list .list-group-item:last-child{
  border-bottom: none
}
.course-discussion .user-other-info-view .accept-view{
  padding: 2px 4px;
  border: 1px solid rgba(49, 175, 132, 1);
  border-radius: 2px
}
.course-discussion .user-other-info-view .accept-view img{
  width: 14px;
  margin-right: 5px
}
.course-discussion .user-other-info-view .accept-view p{
  color: rgba(49, 175, 132, 1);
  font-size: 12px;
  line-height: 17px
}
.is-author{
  margin-left: 4px;
  padding: 2px 4px;
  color: rgba(38, 84, 255, 1);
  border-radius: 2px;
  border: 1px solid rgba(38, 84, 255, 1);
  font-size: 12px;
  line-height: 17px
}
.up-down-btn{
  display: none
}
.up-down-btn p{
  color: rgba(38, 84, 255, 1);
}
.up-down-btn img{
  width: 8px;
  margin-left: 6px
}
.relevance-user-info a img{
  height: 14px;
  width: auto
}
.relevance-user-info .user-logo-view{
  width: 24px;
  height: 24px;
  margin-left: 11px;
  border-radius: 100%;
  overflow: hidden
}
.relevance-user-info .user-name{
  color: rgba(100, 101, 102, 1);
  font-size: 14px;
  font-weight: 400;
  margin-left: 8px
}

/* tab */
.courses-detail-info-card{
  margin-top: 19px;
  border-radius: 4px;
  padding: 0 16px;
  border: none;
  border-bottom: 1px solid rgba(235, 237, 240, 1)
}
.courses-detail-info-card .card-header{
  padding: 0
}
.nav .nav-item{
  margin: 0;
  position: relative;
  margin-right: 24px;
}
.nav .nav-item .line{
  position: absolute;
  bottom: 0px;
  height: 2px;
  background-color: transparent;
  width: 100%
}
.nav .nav-item.active .line{
  background-color: rgba(38, 84, 255, 1);
}
.nav .nav-item .nav-link{
  padding: 0;
  font-size: 14px;
  color: rgba(100, 101, 102, 1);
  padding: 14px 0 12px 0;
  border: none;
}
.nav .nav-item.active .nav-link{
  color: rgba(38, 84, 255, 1)
}

.courses-detail-info-card .card-body{
  padding: 0
}
.courses-detail-info-card .card-body .content{
  padding: 24px 0;
  border-bottom: 1px solid rgba(235, 237, 240, 1)
}
.card-body .content .module-title{
  color: rgba(50, 50, 51, 1);
  font-size: 16px;
  line-height: 22px;
  font-weight: 600
}
.card-body .content .module-content{
  margin-top: 24px;
  color: rgba(50, 50, 51, 1);
  line-height: 20px;
}

/* 课时列表 */
.courses-list-card .list-group-item {
  margin-bottom: 16px;
}
.courses-list-card .list-group-item:last-child{
  margin-bottom: 0;
}

.courses-list-card .list-group-item .play-status-view{

  margin-right: 10px;
}
.item-courses-title{
  color: #323233;
  line-height: 20px;
}
.item-courses-hour{
  margin-top: 8px;
  color: #969799;
  line-height: 17px;
  font-size: 12px;
}


/* 课程大纲 */

.outline-list-view .left-view .big-circle{
  width: 20px;
  height: 20px;
  background-color: #E9EEFF;
  border-radius: 100%;
  padding: 6px;
}
.outline-list-view .left-view .small-circle{
  background-color: rgba(81, 118, 255, 1);
  border-radius: 100%;
  width: 100%;
  height: 100%
}
.outline-list-view .left-view .line{
  width: 3px;
  background-color: rgba(233, 238, 255, 1)
}

.outline-item-view:last-child .left-view .line{
  display: none;
}


.outline-list-view .right-view {
  margin-left: 20px;
  padding-bottom: 24px
}
.outline-list-view .outline-item-view:last-child .right-view{
  padding-bottom: 0
}
 .play-status-view{
  width: 12px;
  height: 12px;
}
.play-status-view img{
  max-width: 12px;
  max-height: 12px
}
.outline-list-view .right-view .course-outline-title .outline-title {
  margin-left: 8px;
  color: rgba(38, 84, 255, 1);
  font-size: 16px;
  font-weight: 600;
  line-height: 22px
}
.outline-detail-list-view{
  margin-top: 12px;
}
.outline-detail-list-view .outline-detail-item{
  color: rgba(50, 50, 51, 1);
  line-height: 20px;
  height: auto;
  border: none;
  padding: 0;
  display: inline-table;
  white-space: normal
}
.course-hour{
  color: rgba(150, 151, 153, 1);
  font-size: 12px;
  line-height: 16px;
  margin-top: 8px
}

/* 讲师介绍 */
.teacher-introduction-view .teacher-logo-view{
  width: 88px;
  height: 88px;
  overflow: hidden;
  border-radius: 100%
}
.teacher-introduction-view .teacher-logo-view img{
  width: 100%;
  min-height: 100%
}
.teacher-introduction-view .teacher-name{
  margin-top: 16px;
  color: rgba(50, 50, 51, 1);
  font-weight: 600;
  line-height: 25px
}
.teacher-introduction-view .tearcher-position{
  color: rgba(150, 151, 153, 1);
  line-height: 20px;
  margin-top: 8px
}
.teacher-introduction-view .teacher-desc{
  margin-top: 16px;
  color: rgba(50, 50, 51, 1);
  line-height: 20px
}

/* 专业推荐 */
.recommend-card .list-item{
  margin-bottom: 24px; 
}
.recommend-card .list-item:last-child{
  margin-bottom: 0;
}
.recommend-card .list-item .tip{
  margin-top: 16px;
  color: #646566;
  line-height: 20px;
}

/* 添加回答 */
.add-comment-view{
  border-top: 1px solid #EBEDF0;
  padding-top: 24px;
}
.add-comment-view button{
  color: #2654FF;
  font-size: 14px;
  line-height: 20px;
}
.add-comment-view button img{
  width: 16px;
  height: 16px;
  margin-right: 8px
}



/* ipa */
@media screen and (min-width: 769px) and (max-width: 960px) {
 
}


/* 移动端 */
@media screen and (max-width: 767px) {
  .courses-study-view .paly-view{
    width: 100%;
    height: 56vw
  }
  .courses-study-view .paly-view .play-btn{
    height: 30px;
    width: 30px
  }
  .courses-title{
    margin-top: 8px;
    font-size: 14px;
    line-height: 18px;
    padding: 0 8px
  }
  .courses-publish-info{
    margin-top: 4px;
    line-height: 18px;
    padding: 0 8px
  }
  .publish-time{
    margin-top: 4px;
    line-height: 18px;
    padding: 0 8px
  }
  .course-discussion{
    padding: 0 8px;
    margin-top: 16px
  }
  .course-discussion .module-title-view .module-title{
    padding-bottom: 8px
  }
  .course-discussion .communites-answer-first-item{
    margin-bottom: 16px
  }
  .course-discussion .answer-content{
    margin-top: 8px;
    line-height: 18px;
  }
  .course-discussion .operation-list-view{
    margin-top: 8px
  }
  .course-discussion .user-other-info-view{
    margin-left: 8px
  }
  .course-discussion .communites-answer-second-list{
    margin-top: 8px;
    padding: 0 8px
  }
  .course-discussion .communites-answer-second-list .list-group-item{
    padding: 8px 0
  }
  .relevance-user-info .user-name{
    font-size: 13px;
    margin-left: 6px
  }
  .relevance-user-info a img{
    height: 12px
  }
  .courses-list-card{
    margin-top: 16px;
    padding: 0 8px
  }
  .courses-list-card .card-header{
    padding: 0
  }
  .courses-list-card .card-header h2{
    padding-bottom: 8px;
    border-bottom: 2px solid #2654FF;
    display: inline-block;
    margin-bottom: -1px;
  }
  .courses-list-card .card-body{
    padding: 16px 0 0 0
  }
  .courses-list-card .list-group-item{
    margin-bottom: 8px
  }
  .courses-detail-info-card{
    margin-top: 16px;
    padding: 0 8px
  }
  .nav .nav-item{
    margin-right: 8px
  }
  .nav .nav-item .nav-link{
    font-size: 13px;
    padding: 8px 0 8px 0
  }
  .courses-detail-info-card .card-body .content{
    padding: 8px 0
  }
  .card-body .content .module-title{
    font-size: 14px;
    line-height: 18px;
    font-weight: bold
  }
  .card-body .content .module-content{
    margin-top: 8px;
    line-height: 18px
  }
  .outline-list-view .left-view .big-circle{
    width: 16px;
    height: 16px;
    padding: 5px;
  }
  .outline-list-view .right-view .course-outline-title .outline-title{
    font-size: 14px;
    line-height: 18px;
    font-weight: bold
  }
  .outline-detail-list-view{
    margin-top: 6px;
  }
  .course-hour{
    margin-top: 4px
  }
  .outline-list-view .right-view{
    margin-left: 8px;
    padding-bottom: 8px
  }
  .teacher-introduction-view .teacher-logo-view{
    width: 70px;
    height: 70px;
  }
  .teacher-introduction-view .teacher-name{
    margin-top: 8px;
    line-height: 18px;
    font-size: 14px;
    font-weight: bold
  }
  .teacher-introduction-view .tearcher-position{
    margin-top: 4px
  }
  .teacher-introduction-view .teacher-desc{
    margin-top: 8px;
    line-height: 18px
  }
  .course-discussion .user-name{
    font-weight: bold
  }
}