When Width is Auto, the margins are honored.

When the left margin is Auto, width and right margin are honored.

When the right margin is auto, both the width and left margin stay specified.

Both margins are auto. The paragraph is aligned in the center of the parent element.

The left margin is the only item specified. Width takes up the rest and the right margin is 0.

The right margin is the only item specified. Width takes up the rest and the left margin is 0

All three items are auto, width takes up the entire parent element and both margins are set to 0

With all items specified, the right margin is treated as auto.