Give

<iframe id=”v-frame” width=”100%” frameborder=”0″ allow=”clipboard-write” src=https://secure.myvanco.com/L-Z7E1 scrolling=”no”></iframe>

    <script type=”application/javascript”>

      window.onmessage=(e=>{const n=document.getElementById(“v-frame”);https://secure.myvanco.com===e.origin&&e.data.height&&(n.height=e.data.height,n.overflow=”hidden”)});

    </script>