Use Clockwise Notation to Specify the Margin of an Element

Let's try this again, but with margin this time.

Instead of specifying an element's margin-top, margin-right, margin-bottom, and margin-left properties, you can specify them all in one line, like this:

margin: 10px 20px 10px 20px;

These four values work like a clock: top, right, bottom, left, and will produce the exact same result as using the side-specific margin instructions.

Use Clockwise Notation to give the element with the green-box class a margin of 40px on its top and left side, but only 20px on its bottom and right side.