picker {
  display: flex;
  align-items: center;
  height: 100%;
  padding-right: 20rpx;
}

.picker {
  position: relative;
  width: 110rpx;
  height: 100%;
  color: #666;
  font-size: 28rpx;
  margin-left: 20rpx;
}
.picker::after {
  content: '';
  width: 0;
  height: 0;
  position: absolute;
  right: 0;
  top: 50%;
  margin-top: -6rpx;
  border-top: 12rpx solid #333;
  border-right: 8rpx solid transparent;
  border-left: 8rpx solid transparent;
}