To improve SEO and eliminate duplicate content, the HTML needs to be rewritten. All class and CSS styles should be removed. This process often involves consolidating similar content, using canonical URLs to specify the preferred version of a page, and ensuring that each page offers unique value and information. The removal of class and CSS styles is important because these elements can impact how search engines index your content, leading to an inaccurate representation of your site’s structure. While class and CSS styles are important for visual presentation, they shouldn’t be used for the semantic structure or content itself. The focus must be on using semantically meaningful HTML elements and text to deliver content clearly and consistently across all pages. This will help both search engines and users understand and navigate your site better.