What is the difference between classes and IDs in CSS?

At its core, the difference between a class selector and an ID selector in CSS revolves around specificity, reusability, and the intended scope of application. Class selectors are denoted by a period (.) followed by the class name and are designed for reusability across multiple elements. This means that you can apply the same class to various elements within your HTML document to impart a consistent styling. This reusability makes classes incredibly versatile and efficient, especially when you aim to maintain a coherent look and feel across your website or application.

ID selectors, on the other hand, are prefixed with a hash (#) followed by the ID value and are intended for single, unique elements. IDs have a higher specificity than classes, meaning that if both an ID and a class are applied...