What is the correct way to center align text inside the paragraph?

What is default grid float breakpoint set by Bootstrap?

Which option should be set to make modal window closable on pressing ESC key?

What is the default gutter width set by Bootstrap?

How to display block only for extra small devices?

Which can be used to call a dialog?

The affix plugin toggles among the following classes? (choose all that apply)

Bootstrap provides the following classes that can be used to apply some simple styles to images? (choose all that apply)

What is Twitter Bootstrap?

Which class is used to create a black navigation bar?

How can you insert a search icon?