Efficiently combines layout and interactivity into a single, reusable class.

This is a div with a class. ``` 2. CSS Class Definition: In your CSS file or within a ` Facebook·Self-Taught Programmers Class selectors - CSS - MDN Web Docs - Mozilla

This is a class selector , likely generated by a modern web framework or library (such as styled-components or CSS Modules), which often produces unique, "scrambled" names to prevent styling conflicts.