The CSS box model is a fundamental concept in CSS that describes the design and layout of HTML elements on a web page. It represents each HTML element as a rectangular box, which includes:
1. Content box: The area where the actual content (text, images, etc.) is displayed.
2. Padding box: The space around the content box, between the content and the border. The padding is transparent.
3. Border box: Surrounds the padding (if any) and the actual content. It can be styled with color, width, and style (like solid, dotted, dashed, etc.).
4. Margin box: The space around the border, which separates the element from other elements. Margin is also transparent.
These individual boxes wrap around each other to form the complete box model for an HTML element. The box model allows developers to design specific spaces for content and helps in the positioning of various elements on the webpage.
