<!--pages/view_use/view/view.wxml--> <view class="section">  <view class="section__title">flex-direction: row</view>  <view class="flex-wrp" style="flex-direction:row;">    <view class="flex-item bc_green">1</view>    <view class="flex-item bc_red">2</view>    <view class="flex-item bc_blue">3</view>  </view> </view> <view class="section">  <view class="section__title">flex-direction: column</view>  <view class="flex-wrp" style="height: 300px;flex-direction:column;">    <view class="flex-item bc_green">1</view>    <view class="flex-item bc_red">2</view>    <view class="flex-item bc_blue">3</view>  </view> </view> [图片]