The HTML Iframe element (inline frame) is used to display the content of other html documents within a web page.
This allows you to open a subwindow in the browser window.
The size of the Iframe element is determined by using the SRC width and SRC height attributes.
Iframe The HTML element uses the SRC attribute that contains the URL address of the HTML document.
A common way to use the html iframe element on web pages is by displaying YouTube videos.
example:
<iframe src="https://www.youtube.com/embed/wIm7u6VbWbg" allowfullscreen></iframe>