.page-body {
  border-top: 1px solid rgba(28, 31, 33, 0.2);
}
.class-box {
  width: 1200px;
  line-height: 20px;
  color: #666;
  padding: 10px 0 0;
  border-bottom: 1px solid #edf1f2;
  overflow: hidden;
  font-size: 14px;
}
.class-box .class-title {
  float: left;
  text-align: right;
  width: 70px;
  height: 21px;
  font-size: 14px;
}
.class-box .class-list {
  overflow: hidden;
  min-height: 28px;
}
.class-box .class-list .list-item {
  display: inline-block;
  padding: 0 10px;
  margin: 0 10px 6px;
  color: #666;
  max-width: 288px;
  white-space: nowrap;
  -ms-text-overflow: ellipsis;
  text-overflow: ellipsis;
  overflow: hidden;
  font-size: 14px;
  cursor: pointer;
}
.class-box .class-list .list-item.active {
  background-color: #06a3f8;
  color: #fff;
  border-radius: 3px;
  text-decoration: none;
}
.list-box {
  overflow: hidden;
  width: 1220px;
  margin-left: -10px;
}
.list-box .item-box {
  width: 285px;
  margin: 15px 10px 0;
  float: left;
  padding: 20px 18px 15px;
  /*border: 1px solid #dfdfdf;*/
}
.list-box .item-box .img-box {
  height: 137px;
  width: 247px;
  border-radius: 4px;
  overflow: hidden;
}
.list-box .item-box .img-box img {
  height: 137px;
  width: 247px;
  border-radius: 10px;
}
.list-box .item-box .item-title {
  line-height: 24px;
  font-size: 15px;
  color: #666;
  /*width: 175px;*/
  height: 46px;
  word-break: break-word;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  /*! autoprefixer: off */
  -webkit-box-orient: vertical;
  /*! autoprefixer: on */
}
.list-box .item-box .item-title:hover {
  color: #f90;
}
.list-box .item-box .item-info {
  line-height: 24px;
  font-size: 15px;
  color: #666;
  overflow: hidden;
}
.list-box .item-box .item-info .item-price {
  color: #f90;
}
.list-box .item-box .item-info .item-teacher {
  font-size: 12px;
  color: #999;
  float: right;
}