input elements are a way to get input from your user.
input elements are self-closing.
Final Code
<h2>CatPhotoApp</h2><main><p>Click here to view more <ahref="#">cat photos</a>.</p><ahref="#"><imgsrc="https://www.bit.ly/fcc-relaxing-cat"alt="A cute orange..."></a><p>Things cats love:</p><ul><li>cat nip</li><li>laser pointers</li><li>lasagna</li></ul><p>Top 3 things cats hate:</p><ol><li>flea treatment</li><li>thunder</li><li>other cats</li></ol><inputtype="text"></main>