flex布局一行三个，显示多行

效果：

代码

<divclass="co-middle"><divclass="img-btn"><imgsrc="../../../assets/images/ml5DisSelect/blueBtn.png"alt=""/><divclass="img-title oneBtn">Pre Task Dispatch</div></div><divclass="img-btn"><imgsrc="../../../assets/images/ml5DisSelect/qBlueBtn.png"alt=""/><divclass="img-title twoBtn">Line Prep DispatchH</div></div><divclass="img-btn"><imgsrc="../../../assets/images/ml5DisSelect/poBtn.png"alt=""/><divclass="img-title threeBtn">Outside Shelf Dispatch</div></div><divclass="img-btn"><imgsrc="../../../assets/images/ml5DisSelect/greenBtn.png"alt=""/><divclass="img-title fourBtn">Warehouse Dispatch</div></div><divclass="img-btn"><imgsrc="../../../assets/images/ml5DisSelect/sBlueBtn.png"alt=""/><divclass="img-title fiveBtn">NPI Dispatch</div></div></div><style>.co-middle{display: flex;flex-wrap: wrap
         clear: both;margin: 25px;;}.img-btn{margin-bottom: 20px;width: 33.33%;}</style>