order 属性设置弹性容器内弹性子元素的属性 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>
    .flex-container {
      display: -webkit-flex;
      display: flex;
      width: 400px;
      height: 250px;
      background-color: lightgrey;
    }

    .flex-item {
      background-color: cornflowerblue;
      width: 100px;
      height: 100px;
      margin: 10px;
    }

    .first {
      -webkit-order: -1;
      order: -1;
    }
  </style>
</head>
<body>

  <div class="flex-container">
    <div class="flex-item">flex item 1</div>
    <div class="flex-item first">flex item 2</div>
    <div class="flex-item">flex item 3</div>
  </div>

</body>
</html>
        