To improve SEO and eliminate duplicate content, remove any redundant text and HTML from your website. Avoid repeating content across multiple pages. Ensure that each page offers unique information and a distinct user experience. Focus on creating high-quality, original content that provides value to your audience. Remove unnecessary class and CSS styles to minimize the risk of duplicate content. Also, consider using canonical tags to point search engines to the preferred version of your content if multiple URLs lead to substantially similar content.