Can I open an external page in the main between the footer and header?

Please be more specific.

as an example, let’s say we have google menu item, when click on itt, i want to open google.com inside wordpresss framework, so the header, footer, sidebar widgets keeps showing + google.
in another word, google.com will be showed as a page in worpress.

Again, you need to be more specific…Google offers many types of services that can use the HTML tags embed or iframe in a website but some data, apps, etc. are not allowed to be used in those manners…that said, WordPress posts and pages support HTML.

look into page templates:
https://codex.www.ads-software.com/Pages#Page_Templates

and iframes
https://www.w3schools.com/tags/tag_iframe.asp

Hello guys,
All what I am seeking of is simple than what u r suggesting.
in wordpress u can make a link open in a new page. What I want is to open that requested page within worpress.
That’s all.