title: Checkbox not displaying
body: <p>I am trying to integrate an HTML 5 <code>required</code> checkbox into a form:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;p&gt;
    &lt;input class="checkbox" type="checkbox" required name="terms"&gt; By submitting you agree to the processing of your data for the purpose of processing your request/booking.
    &lt;br&gt;
    &lt;a href="/en/datenschutz.php" target="_blank"&gt;
      &lt;u&gt;Privacy  Policy&lt;/u&gt;
    &lt;/a&gt;
  &lt;/p&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>It is not displaying in a single browser. I haven't had this problem with other sites before, this site is running Bootstrap v2.2.2. </p>
  
  <p>I found some possible solution with labels which didn't work.</p>