An iframe is used to display a web page within a web page.

<iframe src="URL"></iframe>

#Target

An iframe can be used as the target frame for a link.

The target attribute of the link must refer to the name attribute of the iframe:

ex>
<iframe src="demo_iframe.htm" name="iframe_a"></iframe>
<p><a href="http://www.w3schools.com" target="iframe_a">W3Schools.com</a></p>