How to hide website address on browser? _html/css_WEB-ITnose

Now I have received such a demand. The other party wants me to display the content of his website (multiple dynamic pages) on my website.
But I don’t want the URL of his website to be displayed on the browser.
These two websites are naturally cross-domain. .
Originally, I thought of just using an iframe to include the content of his website, and then automatically adapting to the height would be OK. It should be easy.
The result seems to be due to the cross-domain relationship. As a result, the automatically adapting height code found on the Internet cannot be used.
The page heights on their websites are inconsistent. In addition, there are hidden content on the pages. Some pages have buttons that change the page height after being clicked.

I have a headache. I wanted to ask if anyone has any good ideas.

Reply to discussion (solution)

Chrome, Firefox, and the new version of IE all support private browsing. What code should I write?

Chrome, Firefox, and the new version of IE all support private browsing. What code should I write?

What they need now is that when users visit their website, their URL will not be displayed in the address bar

Chrome, Firefox, and the new version of IE all support private browsing. What code should I write?
With your Iori ultimate move, you can’t catch Terry, you can only catch Chen Kehan, haha~

Doesn’t anyone know? . .

First read the content on the server side and then write it.

Try to see if PHP’s include can replace iframe

Use include