<h2>CatPhotoApp</h2>
<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>
</main>
</p>Purr jump eat the grass rip the couch scratched sunbathe, shed everywhere rip the couch sleep in the sink fluffy fur catnip scratched.</p>
</p>
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36.
As given in the description itself , The main HTML5 tag helps search engines and other developers find the main content of your page. It mainly used for Search Engine Optimization (SEO) and accessibility.
mistakes in your code :
You cant close a tag without opening that. Here <main> missing .
Opening tag should not have the /, here you have used for opening the second paragraph.