In HTML iframe is used to display a web page within a web page.
<iframe src="URL"></iframe>
<!DOCTYPE html>
<html>
<body>
<iframe src="demo_iframe.htm"></iframe>
</body>
</html>
Height and width is used to specify the size of the Iframe.
<!DOCTYPE html>
<html>
<body>
<iframe src="demo_iframe.htm" height="200" width="300"></iframe>
</body>
</html>
By default an iframe has it’s own broder.
To remove the border please see the below the example.
<!DOCTYPE html>
<html>
<body>
<iframe src="demo_iframe.htm" style="border:none;"></iframe>
</body>
</html>