An iframe is used to display a web page within a web page.
Like This :
Syntax for adding an iframe:
<iframe src="URL"></iframe>
The URL points to the location of the separate page.
Iframe - Set Height and Width
The height and width attributes are used to specify the height and width of the iframe.
The attribute values are specified in pixels by default, but they can also be in percent (like "80%").
<iframe src="demo_iframe.htm" width="200" height="200"></iframe>
Iframe - Remove the Border
The frameborder attribute specifies whether or not to display a border around the iframe.
Set the attribute value to "0" to remove the border:
<iframe src="demo_iframe.htm" frameborder="0"></iframe>