BEM

BEM (Block Element Modifier) is a CSS methodology and naming convention for creating reusable and maintainable code in web projects. It provides a structured approach to naming CSS classes based on the component's purpose rather than its appearance. BEM divides user interfaces into independent blocks (components), their elements (child components), and modifiers (variations). The naming convention follows the pattern block__element--modifier to create clear, self-documenting class names. BEM helps prevent CSS conflicts, improves code readability, and makes it easier to scale large projects. The methodology is framework-agnostic and can be used with any CSS preprocessor or vanilla CSS. BEM has been widely adopted by major tech companies and is particularly popular in component-based architectures.