- Added a comprehensive CSS parser with support for tag, class, and ID selectors.
- Implemented property declaration parsing and inline style handling.
- Introduced a Selector class for specificity calculation and matching against HTML elements.
- Created a CSSRule class to represent individual CSS rules.
- Developed a StyleResolver class to compute final styles for elements, considering cascade and inheritance.
- Added integration tests for CSS parsing and style application in HTML documents.
- Updated HTML parser to retain <style> tags for CSS extraction.
- Enhanced tests for CSS parsing, inline styles, and computed styles.
- Removed unused imports from various test files to streamline code.
- Cleaned up whitespace in test cases for better consistency.
- Updated dependency management in `uv.lock` to reflect changes in optional dependencies.
- Ensured all tests maintain functionality while enhancing clarity and organization.
