<!DOCTYPE html>
<html>
<head>
    <title>CSS Flexible Box Test: display proprety - inline-flex</title>
    <link rel="author" title="haosdent" href="mailto:haosdent@gmail.com">
    <style type="text/css">
        /* Positioned container allows for the self-describing statement to still
           be visible in the case of failure */
        .container {
            position: relative;
        }
        .greenSquare {
            display: inline-block;
            margin-top: -200px;
            background: green;
        }
    </style>
</head>
<body>
    <p>The test passed if you see a green block which its text is 'Success!'.</p>
    <div class="container">
      <!-- This is the square that should not be visible if the test passes -->
      <div class="greenSquare">Success!</div>
    </div>
</body>
</html>