Containers are nestable 

The button classes cannot be used on which HTML element?

How to cut cell padding of a table in half?

To show collapsible content by default, which class is used?

Which CSS class is used to create numerical indicators?

What HTML tags are used to display text as code in Bootstrap?

A utility class is typically a single, immutable property-value pairing expressed as a class.

What are the three main elements of the Bootstrap grid listed in the proper order? 

What does the following meta tag do?

<meta name="viewport" content="width=device-width, initial-scale=1">

The .well class adds a rounded border and gray background color around an element. Which of the following statements is true?