What is the difference between padding and margin?

Padding and margin are both CSS properties that are used to add space around an element, but they work in different ways.

Padding is the space between the content of an element and its border. It affects the content area of an element and can be used to add space between the content and the border, or to increase the size of the content area. Padding is specified using the `padding` property in CSS.

Margin, on the other hand, is the space outside the border of an element. It affects the space around the element and can be used to create space between elements. Margin is specified using the `margin` property in CSS.

Here's a visual representation of the difference between padding and margin:

+--------------------+
|   Margin           |
|                    |
|   +------------+   |
|   |  Padding   |   |
|   |            |   |
|   |  Content   |   |
|   |            |   |
|   +------------+   |
|                    |
|   Margin           |
|                    |
+--------------------+

As you can see, the margin is the space around the outside of the entire element, while the padding is the space between the content and the border of the element.

In summary, padding affects the content area of an element, while margin affects the space around the element.