How do I reference js and css files from local library for IntroJs

I have a python 2.7 project that uses IntroJs 7. IntroJs just upgraded to a version 8 and it broke, with no warning, the functionality. I need to access 2 files from version 7, Intro.js and Introjs.css. I used to access them externally with this code on a webpage:

<link rel="stylesheet" href="https://unpkg.com/intro.js/introjs.css"/>
    <script src="https://unpkg.com/intro.js/intro.js"></script>

They changed those public access files from version 7 to 8 so those links cannot be used. To deal with it I imported the provided downloadable library from IntroJs. There are many files in it, including theme css options. However the key files intro.js and introjs.css do not exist in that library. Does anyone have experience using IntroJs from a local library and, if so, how do you call the intro.js and introjs.css files if they don’t exist in that library? I’ve downloaded the library from multiple places and those 2 files are never there.

I should add that the support for IntroJs is very vague about using the downloadable library and says nothing about calling intro.js and introjs.css locally. I’ve emailed them and they have been vague and unhelpful. Any help would be greatly appreciated.

image of introjs local library and how to call css and js files