How does one use containers?

Answer 1

<div class="container">
<div class="jumbotron">
<!-- you can put nearly any valid HTML inside a jumbotron-->
<div>
<div>

Jumbotron indicates a big box for calling extra attention, so put important information into it. It enlarges the font sizes and will be displayed as a grey box with rounded corners.
You can style your container using CSS as well.

Answer 2

Thanks