What does this code do? @import url("mystyle.css");

Does CSS3 totally take over CSS2 or can the two be mixed?

Which selector can be used to target every element on a page?

What are the 4 current vendor prefixes for css3 properties? (5 major desktop browsers, not mobile or tv)

In an unordered list, to turn off the bullets on the li tags use:

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

The RGB color model is hardware-specific while the HSL is symmetrical to lightness and darkness.

If the nav-index property of textbox1 is set to 10, that of textbox2 to 5 and that of textbox3 to 8, what will be the navigation order?

The color in three digit RGB notation is #fb0. What will be its equivalent six digit color code?

What is the type of the letter-spacing property?

You want to set the image resolution to 300dpi irrespective of the resolution of the image. Which of the following codes will be used?