<style> .wrap { width: 400px; display:flex; /*彈性盒子*/ justify-content: space-between; /*兩端對齊,子元素之間有間隙*/ flex-flow: row wrap;/*子元素溢出父容器時換行*/ } span {width: 100px;background-color: green;color:#fff;border-radius: 5px;margin-top: 10px;padding: 10px;} </style> <div class="wrap"> <span>11</span> <span>22</span> <span>33</span> <span>44</span> <span>55</span> </div>
解決方法:追加一個空的子元素
.wrap:after {content: ""; width: 120px; }