.li{
  background: #fff;
  padding: 20rpx 28rpx;
  margin-top: 20rpx;
}
.li view:nth-child(2){
  font-size: 28rpx;
}
.picker{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  border-bottom: 1px solid #f1f1f1;
  text-align: center;
  background: #fff;
  height: 1rem;
}
.row-extra{
  padding:0 0.18rem;
  position: relative;
  display: inline;
  height: 1rem;
  line-height: 1rem;
}
.scroll{
  height: calc(100vh - 100rpx);
}
.after {
  position: absolute;
  top: 50%;
  right: -20rpx;
  margin-top: -0.1rem;
  border: 0.06rem solid;
  border-color: transparent transparent #C0C4CC #C0C4CC;
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
  opacity: .8;
  content: '';
}