Professional Css

The document discusses various techniques for writing professional CSS, including: - CSS allows for rich styling and separates presentation from structure. - Basic CSS rules include using selectors to style elements, grouping styles, and inheritance. - More advanced selectors include class, ID, attribute, and pseudo-class selectors. - The cascade, inheritance, and specificity determine which styles take precedence. - Proper use of CSS structure, selectors, and rules allows for clean separation of concerns and maintainable styling.