title: In IOS, iframe in a bootstrap modal can not scroll
body: <p>I have an iframe inside a bootstrap modal body:</p>
  
  <pre><code>&lt;div id="myModal" class="modal fade" role="dialog"&gt;
    &lt;div class="modal-dialog"&gt;
  
      &lt;!-- Modal content--&gt;
      &lt;div class="modal-content"&gt;
        &lt;div class="modal-header"&gt;
          &lt;button type="button" class="close" data-dismiss="modal"&gt;&amp;times;&lt;/button&gt;
          &lt;h4 class="modal-title"&gt;Modal Header&lt;/h4&gt;
        &lt;/div&gt;
        &lt;div class="modal-body"&gt;
          &lt;iframe style="height:500px;"&gt; &lt;/iframe&gt;
        &lt;/div&gt;
        &lt;div class="modal-footer"&gt;
          &lt;button type="button" class="btn btn-default" data-dismiss="modal"&gt;Close&lt;/button&gt;
        &lt;/div&gt;
      &lt;/div&gt;
  
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>When I try to scroll down the iframe here, nothing happens in IOS. (iphone and ipad) Conversely, it perfectly works in Android.</p>
  
  <p>What adjustments should I make to fix this in IOS?</p>