your test is for the h2 elements.
the elements are what are inside of your tags ( <> </>)
Add your h2 elements within tags. <h2> </h2>like the h1 elements<h1> </h1>Then fill in your CatPhotoApp I think it was.
How they filled in <h1>Hello world</h1> <h2>***********</h2> yah dig
Hope this was helpful.