HTML5 uses HTML tags such as main, header, footer, nav, video, article, section, and others.
Tags give a descriptive structure to HTML code, help make the code easier to read, and helps Search Engine Optimization (SEO) as well as accessibility.
The main HTML5 tag helps search engines and developers find the main content of your page.
Most of your code will be inside the main tag.
Final Code
<h2>CatPhotoApp</h2><main><p>Kitty ipsum dolor sit amet, shed everywhere...</p><p>Purr jump eat the grass rip the couch scratched sunbathe...</p></main>