CSS Box model deals with the area that surrounds each elements and how it can be formatted.
CSS Box model - GeeksforGeeks
html - What is the difference between border-box and content-box in CSS? - Stack Overflow
The CSS Box Model... built only with CSS - DEV Community
CSS box model - Wikipedia
CSS Box Sizing | How is Box Sizing done in CSS? (Examples, Code)
🔎Julia Evans🔍 on Twitter: "the CSS box model https://t.co/QKogsMfWNg" / Twitter
Box Sizing | CSS-Tricks - CSS-Tricks
The CSS Box Model - The Box Model refers to the physical properties of an element's rectangular box. These are margins, borders, pa… | Web design, Webdesign, Design
Introduction to the CSS basic box model - CSS: Cascading Style Sheets | MDN