Block Element Module Methodology for CSS

Object-oriented CSS structure: BEM method

BEM (block, element, modifier) ​​method is a powerful tool to simplify CSS and improve efficiency, especially suitable for large projects:

• Simplicity: BEM’s clear naming convention makes CSS easier to understand and maintain.
• Scalability: Modular design allows easy reuse of components, reducing redundancy and errors.
• Efficiency: BEM’s simple structure reduces debugging time and improves development efficiency.

The core idea of ​​BEM is to build a modular CSS system:

• Blocks: Independent entities with their own meaning, such as headers, containers or menus.
• Elements (Elements): A component of a block that is meaningless on its own and semantically dependent on the block it belongs to, such as a menu item in a navigation block.
• Modifiers: Flags used to change the appearance, behavior, or state of a block or element, such as disabled, highlighted, or active.

These components help build a structured, easy-to-maintain CSS architecture.

Other CSS architectural methods include:

• SMACSS (Scalable and Modular CSS Architecture)
• OOCSS (Object-Oriented CSS)
• SUITCS (structured class name)
• Atomized CSS (small building blocks, similar to Lego bricks)

More information: BEM CSS

Summary:

1. As your code base grows, structured CSS becomes more and more important.
2. BEM is a way to build CSS structures in a maintainable way.

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