.lesson-container {
  padding: 30px 0;
  border-bottom: 10px solid #f8f8f8;
}
.lesson-container .top-header {
  display: flex;
  align-items: center;
  margin-top: 25px;
}
.lesson-container .top-header h3.title {
  color: #cdb380;
  flex: 1;
}
.lesson-container .top-header h3.title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background: #cdb380;
  vertical-align: -2px;
  margin-right: 10px;
}
.lesson-container .top-header .add-btn {
  border: none;
  background: #fc3;
  color: #000;
  padding: 10px 20px;
}
.lesson-container .lesson-group {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
}
.lesson-container .lesson-group .lesson-item {
  cursor: pointer;
  margin: 20px 0;
  margin-right: 35px;
  width: 360px;
  min-height: 260px;
  -webkit-box-shadow: 2px 2px 12px #efefef;
  -moz-box-shadow: 2px 2px 12px #efefef;
  -o-box-shadow: 2px 2px 12px #efefef;
  -ms-box-shadow: 2px 2px 12px #efefef;
  box-shadow: 2px 2px 12px #efefef;
  position: relative;
  top: 0;
}
.lesson-container .lesson-group .lesson-item .lesson-photo {
  height: 220px;
  overflow: hidden;
  position: relative;
  top: 0;
}
.lesson-container .lesson-group .lesson-item .lesson-photo .result-ico {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.2);
}
.lesson-container .lesson-group .lesson-item .lesson-photo .result-ico img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.lesson-container .lesson-group .lesson-item .lesson-name {
  margin: 10px;
  font-size: 2rem;
  font-weight: 500;
}
.lesson-container .lesson-group .lesson-item .date {
  margin: 10px;
  color: #999;
}
.lesson-container .lesson-group .lesson-item .operator-btns {
  position: absolute;
  right: 10px;
  bottom: 10px;
  color: #588fbb;
}
.lesson-container .lesson-group .lesson-item .operator-btns i.fa {
  width: 25px;
  height: 25px;
}
.lesson-container .lesson-group .lesson-item .credit-box {
  position: absolute;
  top: 1px;
  right: 1px;
  padding: 5px 10px;
  background: #fff;
  -webkit-box-shadow: 0 0 10px #ccc;
  -moz-box-shadow: 0 0 10px #ccc;
  -o-box-shadow: 0 0 10px #ccc;
  -ms-box-shadow: 0 0 10px #ccc;
  box-shadow: 0 0 10px #ccc;
}
.lesson-container .lesson-group .lesson-item .credit-box .credit-ico {
  width: 16px;
  position: relative;
  right: 2px;
}