Is it true that the z-index property only applies to positioned elements?

True or False: The borders of an element can vary only up to 2 sides.

Opacity can cause an image to appear:

Using li:nth-child(odd) will:

When styling for devices with 3-3.5 inch screen sizes it's best to use:

True or False: Due to CSS box model you cannot create a circle using CSS3.

What is the initial value of the animation-iteration-count property?

What is the initial value of the font-size property?

Can a percentage value be given in a ruby-align property?

Which rule is equivalent to the em { color: rgb(255,0,0) } style?

Which is not valid values for the target-new property?