iFrame embed with fixed height

iframe_embed_height.html

<iframe src="https://app.calconic.com/api/embed/calculator/5d1bd4d7af0270002612d7a4" sandbox="allow-same-origin allow-forms allow-scripts allow-top-navigation allow-popups-to-escape-sandbox allow-popups" title="Calconic_ Calculator" name="Calconic_ Calculator" height="1676px" scrolling="no" style="width: 100%; border: 0; outline: none;"></iframe>
<script>
  (function() {
    window.addEventListener("message",function(t){
      var e="https://www.paypalobjects.com/api/checkout.4.0.141.js";
      if(!document.querySelector('script[src="'+e+'"]')&&t.data&&"LOAD_PAYPAL"===t.data.action){
      var a=document.createElement("script");a.src=e,a.async=!0,a.dataset={paypalCheckout:!0,noBridge:!0,state:"ppxo_meta",env:"production"},document.body.append(a)
      }if(t.data&&"CALCONIC_UPDATE_HEIGHT"===t.data.action){
      var s=documenet.querySelector('iframe[src="https://app.calconic.com/api/embed/calculator/t.data.payload.id"]');
      if(s){s.height=t.data.payload.height}}
    });
  })();
</script>