wxml：
view class='header'服务类型/view view class='ff_anniu' view class='ff_item' wx:for='{{categorys}}' wx:key='{{index}}' view class='ff_itemname sel {{activeIndex == index ? "sel" : ""}}' data-id='{{item.id}}' bindtap='binditem'{{item.name}}/view /view /viewwxss：
.ff_anniu{ width:100%; display: flex; /* flex-direction: row; flex-wrap: true; */ 特别注意： 实测这里flex-flow 和 flex-direction / flex-wrap 是不一样的 flex-flow: row wrap; align-content: space-around; }.ff_item{ box-sizing: border-box; flex: 0 0 33.3333333333333%; font-size: 30rpx; color: #535353; background-color: white; padding: 20rpx; text-align: center; display: block; }
