<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>CSS Reftest Reference</title>
  <link rel="author" title="Morgan Rae Reschenberg" href="mailto:mreschenberg@berkeley.edu">
  <style>
  .basic {
    border: 1em solid green;
    display: inline-flex;
  }
  .width-ref {
    width: 50px;
  }
  .innerContents {
    color: transparent;
    width: 0;
    height: 0;
  }
  </style>
</head>
<body>
  aa<div class="basic"><div class="innerContents">i</div></div>bb
  <br>

  aa<div class="basic width-ref"><div class="innerContents">i</div></div>bb
</body>
</html>