Which of the following selector is used to selects the element that is the root of the document?

Which of the following css property specifies an image to use as the background of an element?

A. background

B. background-img

C. background-image

D. none of the mentioned

Which of the following css property specifies a delay for the transition effect?

A. transition-delay

B. transition-effect

C. transition

D. transition-duration

Which of the following method rotates an element around its Y-axis at a given degree using tranform 3D?

A. rotateY()

B. rotate-Y()

C. rotate-Yaxis()

D. none of the mentioned

Which of the following property defines where a 3D element is based in the x- and the y-axis?

A. transform-style

B. perspective(n)

C. perspective-origin

D. none of the mentioned