What is the default font-size in Bootstrap 4?

In Bootstrap, content must be placed within _____

Progress bars are not supported in which of the following web browsers?

Which of the following class applies the hover color to a particular row or cell of a table?

What class name should you add to this image tag in order to make it responsive?

Which of the following Bootstrap classes is not a vertical alignment class?

What are the maximum container widths for small and large screen size devices in Bootstrap?

TrCards replace panels, thumbnails, and wells used in Bootstrap 3 and are essentially a contained group of content with a border and inner padding. 

To span a button group across the entire width of the screen, which class is used?

What does the HTML code <div class="container pt-3"></div> do?