Scoping CSS properly is essential for preventing style conflicts and maintaining clean component-based architecture in Vue applications. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented CSS scoping in numerous Vue components to ensure styles don’t leak between different parts of the application. From my expertise, the most effective approach is to use the scoped attribute in Vue’s style tags. This method automatically generates unique identifiers for each component, ensuring styles only apply to the current component’s elements.