Answer:
The answer is "The concept of the CSS Box model ".
Explanation:
Cascading Style Sheets (CSS) is used for web design and formatting, the term box template or model is used. The CSS box model works as a container that covers all the HTML elements inside.
- It includes many features, sides, margins, lining, and materials.
- The design and development of web pages is provided by the CSS box model.
- The framework can be used to modify and design various items.