Jumbotrons can be important for communicating primary ideas and drawing focus to certain parts of your website.
This website is for demonstrating 3 things in bootstrap and explaining how they can be
Columns are helpful because they allow you to better organize separate ideas and concepts.
I've been using only single columns until this concept. Also resize the window for a little
You can also add tags like col-xs-6, col-md-8 or hidden-sm to change how things look in
certain viewports so that way your website doesnt look to cluttered on a phone, or too empty
on a computer.