Which of the following requirements must be met in order to add noise to the background using CSS3?

Which is not a valid value for the font-smooth property?

Is it possible to use transition animations with a gradient background?

Which is not a valid page break?

Which code is appropriate to flip any background image?

Best way to center a div element?

What are the differences between "display:none" and "visibility:hidden" code?

Which of the following sets all the border properties in one declaration?

What css selector selects the input element which has focus?

Which syntax does older versions of Internet Explorer use for transparency?

How can you override css cascade priority and force a particular css rule to apply?