How to make background image in jumbotron


HOW DO I MAKE A BACKGROUND IMAGE IN JUMBOTRON!!!!!!! I can't figure it out. I've tried to many times.


Nevermind. I knwo how to do it now.


I'd like to know how you get the background image to cover the entire area at the bottom. I tried to use background-size: cover;

Not sure what I'm doing wrong.