1. Using a consistent naming convention: It's essential to choose a naming convention like BEM (Block, Element, Modifier) or OOCSS (Object-Oriented CSS) to keep the code organized and easy to understand.
2. Organizing the code into modular components: Breaking down the CSS into smaller, reusable components can make it easier to maintain and scale. I've found that using a preprocessor like Sass or Less can help with this process.
3. Leveraging CSS variables: Using CSS variables (also known as custom properties) can help manage colors, fonts, and other design elements consistently across the project.
4. Avoiding the use of !important: Relying on !important can make it difficult to override styles and maintain the code. Instead, I like to think of better ways to increase specificity or refactor the code.
5. Implementing a style guide: A living style guide or pattern library can help document the design system and serve as a reference for developers and designers.