Iris Comjoo Back Navigation Example

HTML

<button onclick="document.getElementById('iris').contentWindow.postMessage('navigate-back','*')">
Back
</button>
<hr>
<iframe id="iris" src="https://comjoo.curasystems.com" width="100%" height="500px" frameborder=0 >

</iframe>

CSS

body {
  background-color:white
}