To improve SEO and eliminate duplicate content, the HTML needs to be rewritten. This involves removing redundant text and ensuring that each page has unique content. Class and CSS styles should also be removed, as they don’t contribute to the semantic meaning of the content. Focus on creating high-quality, original content that is relevant to the target keywords. Use proper heading tags (H1-H6) to structure the content logically. Ensure that the content is well-organized and easy to read. Internal and external linking should be implemented appropriately. Finally, the site map needs to be optimized for search engines. By implementing these changes, the website will have a better chance of ranking higher in search engine results pages (SERPs).