<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Flexbox Test Reference File</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<style>
  div {
    background-color: green;
    height: 25px;
    width: 100px;
  }
</style>
<body>
  <p>Test passes if there is a filled green square and no red, the number within square is '1 2 3 4' from top to bottom.</p>
  <div>1</div>
  <div>2</div>
  <div>3</div>
  <div>4</div>
</body>