How to make different bootstrap markup on different pages?

Question

Bootstrap

Colleagues, how can I make sure that different bootstrap markup is used on different pages of the site?
I have main content col-md-9 and sidebar col-md-3. I need that when a visitor enters the inner part of the site under an account, the sidebar disappears (I did this), and the main content was full-width col-md-12.
Site on Wordpress.
Thanks in advance.

Answer 1

Maybe it's worth having multiple templates for a page? and just use the right

Answer 2

As an option - assign an id and change the class of the object through js.