how to display html file in iframe code example
Example 1: how to open a website inside a website
<iframe src="https://www.codegrepper.com" width="100%" height="300px"
title="website" style="border: 10px solid black;">
</iframe>
Example 2: put html in iframe
<iframe srcdoc="<html><body>Hello, <b>world</b>.</body></html>"></iframe>