What does separating HTML and CSS primarily provide?

Separating HTML and CSS primarily provides a cleaner code structure, which is essential for maintaining and developing web applications effectively. When HTML is kept distinct from CSS, the responsibilities of content and presentation are clearly defined. This separation allows developers to manage and update styles without altering the underlying markup, making the code easier to read and understand for both humans and machines.

The benefits of a cleaner code structure include improved maintainability, as developers can make changes to the layout and style without affecting the HTML. This modularity also facilitates collaboration within teams, as designers can work on CSS independently of content updates.

Additionally, maintaining a clear structure aids in debugging, as it's easier to locate issues in well-separated code. This approach enhances the overall organization and reduces redundancy, allowing for more efficient coding practices.