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