<view class="col u-margin-30 u-padding-20 box-shadow"><view wx:for="{{a}}" wx:for-item="col" class="row u-flex"><view class="row-left" style="{{'width:' + b}}">{{col.a}}</view><view class="row-right" style="{{'width:' + c}}">{{col.b}}</view></view></view>