Salesforce JavaScript Developer Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

In Salesforce Lightning Web Components (LWC), scoped CSS, external stylesheets, and inline styles are all valid methods for applying styles to components. Scoped CSS allows you to define styles that are specific to a component, ensuring that they do not affect other components on the page. This encapsulation is a key feature of LWC, as it promotes modular development and avoids style conflicts.

External stylesheets can be used to apply consistent styling across multiple components and can be imported into LWC, enhancing maintainability and reusability of styles. Inline styles offer a quick way to apply styling directly to individual elements within a component, making it straightforward to implement simple styling directly in the template.

On the other hand, while global CSS can be applied in other web development frameworks, it is not applicable in the same way within LWC. Global CSS would imply that styles could inadvertently affect all components across a Salesforce application, which goes against the principles of encapsulation and modularity that LWC was designed to uphold. The non-acceptance of global CSS in LWC serves to protect components from unintended style overrides and maintain the integrity of their presentation.