.top-view {
  width: 100%;
  height: 44px;
  background: #ffffff;
  box-shadow: 0px 0px 5px 0px rgba(0, 0, 0, 0.2);
  box-sizing: border-box;
  padding: 0 20px;
}
.top-view .goback {
  width: 10px;
  height: 17px;
}
.top-view .course-title-name {
  font-size: 16px;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #333333;
}
.top-view .question-type {
  font-weight: 500;
  color: #b4b4b7;
  padding-right: 5px;
}
.top-view .change-type-icon {
  width: 10px;
  height: 6px;
}
.top-view .type-cell {
  position: relative;
}
.top-view #type-view {
  position: absolute;
  display: none;
  width: 180px;
  height: 300px;
  background: #ffffff;
  box-shadow: 0px 1px 5px 0px rgba(0, 0, 0, 0.05);
  border-radius: 0 0 8px 8px;
  top: 28px;
  right: 0px;
  z-index: 999;
}
.top-view #type-view ul {
  height: 300px;
  overflow-y: scroll;
}
.top-view #type-view ul li {
  width: 100%;
  height: 35px;
  line-height: 35px;
  text-align: center;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  box-sizing: border-box;
  padding: 0 10px;
}
.top-view #type-view ul .nav-selected-type {
  height: 47px;
  line-height: 47px;
  background: #f7f8fa;
  font-size: 24px;
  font-weight: 500;
  color: #ff9b00;
}
.cell-view {
  margin-top: 15px;
  padding: 15px 20px;
  box-sizing: border-box;
  line-height: 17px;
  font-weight: 400;
  color: #333333;
}
.cell-view .option-cell {
  background: #f7f8fa;
  border-radius: 20px;
  border: 1px solid rgba(51, 51, 51, 0.1);
  box-sizing: border-box;
  padding: 10px 15px;
  margin-bottom: 10px;
}
.cell-view .option-cell:last-child {
  margin-bottom: 0;
}
.best-answer {
  margin: 0 auto;
  width: 140px;
  height: 31px;
  background: #ff9b00;
  border-radius: 16px;
  border: 1px solid #f7f8fa;
  text-align: center;
  line-height: 31px;
  font-weight: 500;
  color: #ffffff;
}
.change {
  width: 100px;
  height: 31px;
  background: #ff9b00;
  border-radius: 16px;
  text-align: center;
  line-height: 31px;
  font-weight: 500;
  color: #ffffff;
}