小程序实现遮罩层，并禁止底部页滚动

遮罩层：

.customer-popmenu{
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right:0;
  z-index: 11;
  overflow: hidden;
}

弹出的view

<view wx:if="{{isShowCustomerMenu}}" class="customer-popmenu" catchtouchmove="true">
</view>