Which class indicate a Dorp-down menu ?

 Which of the following aligns media objects? 

  Which of the following fades the model in and out?
 

To get a bordered box around its content, which HTML/CSS element is used?

 Which of the following allows an element to lock to an area on the page? 

Which CSS class will change the order of grid columns?

Which of the following CSS classes will display a red alert box?

Which Bootstrap class should be used to create 3 equal-width columns?

Use .table-hover to enable a hover state on table rows within a <tbody>.

.align-baseline, .align-top, .align-middle, .align-bottom, .align-text-bottom, and .align-text-top are vertical alignment utility classes.