title: Zooming-in iFrame PDF of FancyBox
body: <p>I am opening a PDF in fancybox3 using a <code>base64</code> string. It opens the <code>PDF</code> but the actual pages appear very very tiny. If I zoom-in a few times then they appear fine. 
  Is there a way to set the zoom to 100% within the <code>open function</code>?</p>
  
  <pre><code>   $.fancybox.open({
                  content: '&lt;iframe width="80%" height="90%" src="data:application/pdf;base64,' + data + '" /&gt;',             
                  width: 800,
                  type: "html",
              });
  </code></pre>