How to use different template kits on the same Wordpress site

How are you all?
I’m making a website right now, and I’d like to know how to mix different template kits.

For example, the home page would be made with template kit A, the “about us” page with template kit B, the blog page with template kit C, and so on.

Is it possible? How?
When I import “template kit B,” the site breaks and it doesn’t look like the CSS is imported.

We appreciate the answers from pub tv login