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<head>
  <meta charset="UTF-8">
  <title>
    CSS Reference Case
  </title>
  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
  <link rel="author" title="Mozilla" href="https://www.mozilla.org">
  <link rel="help" href="https://drafts.csswg.org/css-align/#baseline-export">
  <style>
    .container {
      /* In this reference case, we leave 'overflow' at its initial value. */
      height: 50px;
      width: 100px;
      border-style: solid;
      border-