All HTML elements can be considered as boxes. In CSS, the term "box model" is used when talking about design and layout.
The CSS box model is essentially a box that wraps around every HTML element. It consists of: margins, borders, padding, and the actual content. The image below illustrates the box model:
Explanation of the different parts:
- Content - The content of the box, where text and images appear
- Padding - Clears an area around the content. The padding is transparent
- Border - A border that goes around the padding and content
- Margin - Clears an area outside the border. The margin is transparent
The box model allows us to add a border around elements, and to define space between elements.
All CSS Outline Properties
| Property | Description |
|---|---|
| outline | A shorthand property for setting outline-width, outline-style, and outline-color in one declaration |
| outline-color | Sets the color of an outline |
| outline-offset | Specifies the space between an outline and the edge or border of an element |
| outline-style | Sets the style of an outline |
| outline-width | Sets the width of an outline |
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