The site was made by INTRO. How to redirect a website to !/intro/1 directory using .htaccess?

Question

htaccess

The site was made by INTRO. How to redirect the site to the directory !/intro/1 using .htaccess (while returning to the site to the root on index.php at the end of the intro is automatic) Thank you!

Answer 1

DirectoryIndex /!/intro/1/index-intro.html + replacing all paths in index-intro.html with the root i.e. adding /!/intro/1/ - SOLVED THE ISSUE OF LAUNCHING THE INTRO..... but the intro starts in the ring)))) became infinite.... How to switch to the intro ONLY ONE TIME???