<div data-html="allow" >
<iframe style="border: 0px;  display: block" height="400" class="spoooky-auth" src="https://api.spooo.ky/auth/facebook" border="0"></iframe>
</div>

<div data-html="allow" >
<iframe id="iFrame1" style="border: 0px;  display: block" height="400" class="spoooky-auth" src="https://api.spooo.ky/auth/facebook" border="0"></iframe>
</div>

<script type="application/javascript">

function resizeIFrame {

    iFrame.width  = iFrame.contentWindow.document.body.scrollWidth;
    iFrame.height = iFrame.contentWindow.document.body.scrollHeight;
}

window.addEventListener('DOMContentLoaded', function(e) {

    var iFrame = document.getElementById( 'iFrame1' );
    resizeIFrame;

} );

</script>