<script>
	var nhiframe = document.getElementById('nhiframe');
	window.addEventListener('message', function(e) {
		// message that was passed from iframe page
		// check message content if you have other messages too
		let message = e.data;
		nhiframe.style.height = message.height + 'px';
	} , false);
</script>

				

<style>
	iframe {
		width: 100%;
		max-width: 400px;
		border: 0;  /* remove default border */
	}
</style>

				

	Add ?lang=en to iframe src path to force specific language. Available languages are en, ru, zh, de, pt, es, fr, ja.