.block-box {
  /*width: 1200px;*/
  padding-top: 20px;
}
.block-box .title-box {
  width: 1200px;
  line-height: 40px;
  height: 40px;
  font-size: 24px;
  /* float: left; */
  margin:auto;
}
.block-box .more-btn {
  width: 80px;
  text-align: center;
  float: right;
  font-size: 15px;
  height: 40px;
  line-height: 40px;
  color: #50a9db;
}
.block-box .list-box {
  overflow: hidden;
  width: 1220px;
  /* margin-left: -10px; */
  margin: auto;
}
.block-box .list-box .item-box-grade{
  width: 100px;
  display: inline-block;
  margin: 0 10px 10px 0;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  background: #FFF;
  /*border: 1px solid #DCDFE6;*/
  color: #606266;
  -webkit-appearance: none;
  text-align: center;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  outline: 0;
  -webkit-transition: .1s;
  transition: .1s;
  font-weight: 500;
  padding: 12px 20px;
  font-size: 14px;
  border-radius: 4px;
}
.block-box .list-box .item-box {
  width: 285px;
  margin: 10px 10px 0;
  float: left;
  padding: 10px 18px 15px;
  /*border: 1px solid #dfdfdf;*/
}

.bgfff {
  background-color: #fff !important;
}
#app > .bgfff {
  box-shadow: 0 2px 8px 0 rgba(7, 17, 27, 0.06);
}
/*.bg000{
   background-color: #f3f5f7 !important;
}*/
#app > .bg000 {
  box-shadow: 0 2px 4px 0 rgba(7, 17, 27, 0.06);
}

.banner{
  text-align: center;
}
.block-box .list-box .item-box .img-box {
  height: 137px;
  width: 247px;
  border-radius: 4px;
  overflow: hidden;
}
.block-box .list-box .item-box .img-box img {
  height: 137px;
  width: 247px;
  border-radius: 10px;
}
.block-box .list-box .item-box .item-title {
  line-height: 24px;
  height: 46px;
  font-size: 15px;
  color: #666;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  /*! autoprefixer: off */
  -webkit-box-orient: vertical;
  /*! autoprefixer: on */
}
.block-box .list-box .item-box .item-title:hover {
  color: #f90;
}
.block-box .list-box .item-box .item-info {
  line-height: 24px;
  font-size: 15px;
  color: #666;
  overflow: hidden;
}
.block-box .list-box .item-box .item-info .item-price {
  color: #f90;
}
.block-box .list-box .item-box .item-info .item-teacher {
  color: #999;
  float: right;
}
.block-box .list-box .item-box .teacher-info {
  padding-bottom: 10px;
  overflow: hidden;
}
.block-box .list-box .item-box .teacher-info a.img-box,
.block-box .list-box .item-box .teacher-info img {
  height: 92px;
  width: 92px;
  border-radius: 4px;
  display: block;
}
.block-box .list-box .item-box .teacher-info .teacher-info-content {
  padding: 10px 0 0 18px;
  overflow: hidden;
  height: 92px;
}
.block-box .list-box .item-box .teacher-info .teacher-info-content .teacher-name {
  padding-bottom: 10px;
}
.block-box .list-box .item-box .teacher-info .btn {
  width: 80px;
  height: 26px;
  /* background: #2c8aee; */
  color: #fff;
  text-align: center;
  border-radius: 5px;
  margin-top: 15px;
  font-size: 14px;
  line-height: 26px;
  display: block;
}
.block-box .list-box .item-box .teacher-tip {
  line-height: 38px;
  height: 38px;
  color: #666;
  border-top: 1px solid #efefef;
  font-size: 0;
}
.block-box .list-box .item-box .teacher-tip span {
  width: 123px;
  display: inline-block;
  font-size: 14px;
}
.block-box .list-box .item-box .teacher-tip .line {
  width: 1px;
  color: #efefef;
  font-weight: lighter;
}
.block-box .list-box .item-box .teacher-tip .item-teacher {
  text-align: right;
}

.teacher-info .color1 {
  background: #2b89ed;
}
.teacher-info .color2 {
  background: #f57b28;
}
.teacher-info .color3 {
  background: #df0ac8;
}
.teacher-info .color4 {
  background: #223caa;
}
.teacher-info .color5 {
  background: #30b188;
}
.teacher-info .color6 {
  background: #85c306;
}
.teacher-info .color7 {
  background: #a00610;
}
.teacher-info .color8 {
  background: #ea9a27;
}
.teacher-info .color9 {
  background: #9a6725;
}
.teacher-info .color10 {
  background: #b68ffd;
}
.teacher-info .color11 {
  background: #ff7474;
}
.teacher-info .color12 {
  background: #ffa716;
}