public/422.html from education/classroom

public/422.html
Summary

Maintainability

Test Coverage

Issues
<!DOCTYPE html>
<html>
<head>
  <title>Unprocessable entity | GitHub Classroom</title>
  <meta name="viewport" content="width=device-width,initial-scale=1">
  <style>
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  </style>
</head>

<body>
  <div class="not-found-container">
    <div class="notfound-top">
      <h1>422</h1>
    </div>
    <div class="content">
      <h3>Unprocessable entity</h3>
      <h4>The change you wanted was rejected.</h4>
      <h4><a href="/">Go back to classroom dashboard</a></h4>
    </div>
    <div class="clear"></div>
  </div>
  <div class="site-footer">
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  </div>
</body>
</html>