<style>
.cnb-embed { position: relative; width: 100%; height: 70vh; }
.cnb-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
@media (max-width: 767px) { .cnb-embed { height: 80vh; } }
</style>
<div class="cnb-embed">
<iframe src="https://claimnbilling.com/calculator.html"
title="Embedded page" loading="lazy"></iframe>
</div>
