page{
  background: white;
}
.course-name{
  text-align: center;
  font-size: 20px;
  line-height: 36px;
  height: 36px;
  padding: 0 12px;
  width: 100%;
}
.switch{
  transform: scale(0.85);
}

.header{
  padding: 12px 8px;
  background: white;
  border-bottom: #dddddd 1.5px solid;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.count{
  font-size: 14px;
  margin-left: 10px;
}

.empty,
.tip{
  font-size: 12px;
  color: dimgray;
}
.empty{
  text-align: center;
  padding-top: 26px;
}