How do I wrap an website into my website?

Look this website : https://www.prixa.ai/

If you click button "Prixa Sekarang", it show like this :

I want to include content from that website into my website

What I mean is this content :

And the next step

For example my website url is : www.secret.com. I want to include content from website https://www.prixa.ai/ into the website www.secret.com. So when you access the content of prixa url, the url is still under www.secret.com

How can I do it?