How to make a portfolio of sites without going to these sites?

Question

css

It is necessary to make a portfolio of created sites. Prior to this, each site had a link, and the user went to the site from the portfolio to view it. How to make it so that the user can see them without leaving the site? It is necessary that he sees the site itself (including its active links), and not a static picture. The catch is that all sites are created on different CMS - some on Wordpress, some on ModX, some on Bitrix. What is the best way to implement this? Source site - on Modx, if that

Answer 1

iframe?
you can use magnific popup for this

Answer 2

You can open a window (NOT A TAB!) with the desired link by clicking:
https://javascript.ru/window-open