Bootstrap Version And Cs-Cart 4.13.2.sp2

Hi, we're having a front-end developer work on the site and they need some basic information to be able to provide us with a better quality product. Anyone who could answer the following questions would be hugely helpful:
  1. What version of Bootstrap does CS-Cart Version 4.13.2.SP2 use?
  2. When trying to design HTML blocks on the front-end of a CS-Cart install, can we use straight Bootstrap or will the class names interfere with any other part of the framework?
Thanks for the help.

Bootstrap was not updated since that date