Unable to use jqueryui draggable for iframe

I've an iframe(which is a bot icon) in a main site. I am unable to make the iframe element draggable using jqueryui draggable() function.

The code snippet is below

$("#testIframe").draggable();

#testIframe {
  position: absolute;
  bottom: 0;
  right: 0;
  background: #ccc;
  padding: 10px;
  width: 200px;
  height: 100px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<div class="parent">
Parent text....
  <div class="child">    
    <iframe id="testIframe" width="100%" height="300" src="//jsfiddle.net/iamraviteja/09hdej6t/2/embedded/" frameborder="0"></iframe>
  </div>
</div>

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