How to make a floating block in bootstrap?

Question

Bootstrap

It is necessary to make an order form on the right side of the first screen (name, soap, phone, message) - it's all simple, but the client wanted the form to always remain on the screen when scrolling the page up and down.
Actually, the question is how to make a floating block on bootstrap? And what to do with it on the smartphone screen, fix it, for example, so that it does not cover the content and stays on top? Tell me who did this, where to dig, where to see a code example and what you yourself consider necessary.
Thank you!

Answer 1

Bootstrap has nothing to do with it. is done via position: fixed.