The CGI code helps the web server to understand that the page is not static and that there’s a script that it should run as a program in order to display the required data in the browser.
You can style things yourself or use one of the many templates available.
The software uses PHP and a license will grant you to the full source code.
That’s why you must make sure that your host provides you with access to the CGI-bin.
It’s not even necessary to write any CGI code, there are many free CGI scripts that you can use for your site.
With p H7CMS, anyone can start a Social Dating web app like Tinder or Badoo in a day without any technical knowledges.