.bg {
  width: 100%;
  background-color: #f2f2f2;
}
.breadcrumb-box {
  padding-top: 20px;
}
.course-box {
  padding-top: 10px;
  overflow: hidden;
  padding-bottom: 40px;
}
.course-box .video-box {
  width: 640px;
  height: 357px;
  position: relative;
}
.course-box .video-box img {
  width: 640px;
  height: 357px;
}
.course-box .video-box .play-btn {
  font-size: 80px;
  cursor: pointer;
  color: #0095e5;
  position: absolute;
  top: 50%;
  left: 50%;
  margin: -40px 0 0 -40px;
  background-color: rgba(255, 255, 255, 0.4);
  border-radius: 100%;
}
.course-box .course {
  width: 500px;
  height: 357px;
}
.course-box .course .course-title {
  font-size: 20px;
  line-height: 40px;
  text-align: left;
  color: #333;
}
.course-box .course .course-info {
  line-height: 26px;
  padding-bottom: 10px;
  font-size: 15px;
}
.course-box .course .course-info .course-item {
  margin-right: 20px;
  display: inline-block;
}
.course-box .course .sales-info {
  padding: 20px 0;
  background-color: #efefef;
  font-size: 0;
}
.course-box .course .sales-info .sales-item {
  line-height: 24px;
  text-align: center;
  width: 100%;
  font-size: 15px;
  display: inline-block;
}
.course-box .course .sales-info .sales-item.line {
  border-left: 1px solid #d4cfce;
  border-right: 1px solid #d4cfce;
}
.course-box .course .ctrl-btn {
  padding-top: 40px;
}
.course-box .course .ctrl-btn .btn {
  background-color: #ff9900;
  border-color: #ff9900;
}
.course-box .course .ctrl-btn .c-red {
  color: red;
}
.course-box .course .ctrl-btn .wechart {
  background-color: #ff9900;
  border-color: #ff9900;
  width: 114px;
}
.course-box .course .ctrl-btn .alipay {
  background-color: #0095e5;
  border-color: #0095e5;
  width: 114px;
}
.course-box .course .share-box {
  height: 50px;
  border-bottom: 1px solid #e1e1e1;
  padding-top: 10px;
}
.course-box .course .share-box .collection {
  color: #666;
}
.course-box .course .share-box .collection.active {
  color: #ff8723;
}
.course-box .course .share-box .collection span {
  vertical-align: middle;
  font-size: 16px;
  line-height: 16px;
  font-weight: normal;
}
.course-box .course [class^=el-icon-star-] {
  vertical-align: middle;
}
.course-box .course .el-icon-star-on {
  border-color: #ff9900;
  font-size: 20px;
}
.course-box .course .el-icon-star-off {
  font-size: 20px;
}
.course-content {
  overflow: hidden;
}
.left-content {
  border: 1px solid #dfdfdf;
  width: 850px;
  float: left;
}
.left-content .title-box {
  color: #0096e6;
  line-height: 40px;
  padding: 10px 30px 0;
  border-bottom: 1px solid #e4e4e4;
  font-size: 18px;
}
.left-content .course-content-box {
  padding: 20px 10px 0;
  min-height: 500px;
}
.right-box {
  float: right;
  width: 330px;
}
.teacher-info {
  border: 1px solid #e4e4e4;
  padding-bottom: 10px;
}
.teacher-info .title {
  line-height: 40px;
  padding: 10px 20px 0;
  border-bottom: 1px solid #e4e4e4;
  color: #333;
  font-size: 20px;
}
.teacher-info .img-name {
  padding: 20px 0;
  line-height: 92px;
  color: #333;
}
.teacher-info .img-name img {
  height: 92px;
  width: 92px;
  border-radius: 5px;
  margin: 0 20px;
  vertical-align: middle;
}
.teacher-info .img-name span {
  vertical-align: middle;
}
.teacher-info .img-name .name {
  font-size: 18px;
}
.teacher-info .img-name .job {
  color: #0095e5;
  font-size: 14px;
  vertical-align: middle;
}
.teacher-info .info {
  padding: 0 20px 20px 20px;
  font-size: 14px;
  color: #666;
  height: 60px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  /*! autoprefixer: off */
  -webkit-box-orient: vertical;
  /*! autoprefixer: on */
}
.recommend-box {
  border: 1px solid #e4e4e4;
  margin-top: 30px;
}
.recommend-box .title {
  line-height: 40px;
  padding: 10px 20px 0;
  border-bottom: 1px solid #e4e4e4;
  color: #333;
  font-size: 20px;
}
.recommend-box .recommend-list {
  padding-bottom: 20px;
}
.recommend-item {
  padding: 20px 10px 0;
}
.recommend-item img {
  width: 161px;
  height: 90px;
  margin-right: 15px;
  float: left;
  border-radius: 5px;
}
.recommend-item .info-box {
  line-height: 22px;
  overflow: hidden;
  color: #999;
}
.recommend-item .info-box .course-title {
  height: 44px;
  display: block;
  color: #666;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  /*! autoprefixer: off */
  -webkit-box-orient: vertical;
  /*! autoprefixer: on */
}