Bootstrap is used for

    What clears floats?
 

  Which plugin is used to cycle through elements, like a slideshow? 

Bootstrap is Developed by ?

 The .container-fluid class provides 

What Bootstrap version should you use if you need to support IE9? 

Which of the following contextual classes cannot be added with the .alert class?

Which of the following sizes is not available for changing width and height utilities of an element by default in Bootstrap 4?

Wrap any embed like an <iframe> in a parent element with _______ and _______.

Statement 1: Visibility utilities modify the display value of elements.

Statement 2: You may apply classes .visible or .invisible to control the visibility of elements.