<!DOCTYPE html>
<html>
<head>
    <title>CSS Flexible Box Test: align-content property - space-between</title>
    <link rel="author" title="haosdent" href="mailto:haosdent@gmail.com">
    <style type="text/css">
        .container {
            position: relative;
            height: 14em;
            width: 20em;
            background: red;
            margin: 1em;
            border: 1px solid black;
        }

        span {
            height: 2em;
            display: inline-block;
            background: green;
            color: white;
            margin: 2.5em 1em;
            width: 8em;
            float: left;
        }
    </style>
</head>
<body>
    <p>The test passed if you see a 2*2 table and all the cells are at the bottom of container.</p>
    <div class="container">
      <span>first</span>
      <span>second</span>
      <span>third</span>
      <span>forth</span>
    </div>
</body>
</html>