If you click on the Restart Step button, then look at the editor, you will be presented with this code:
<section>
<h2>Cat Lists</h2>
<h3>Things cats love:</h3>
<ul>
<li>cat nip</li>
<li>laser pointers</li>
<li>lasagna</li>
</ul>
<figure>
<img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/lasagna.jpg" alt="A slice of lasagna on a plate.">
<figcaption>Cats <em>love</em> lasagna.</figcaption>
</figure>
<h3>Top 3 things cats hate:</h3>
<ol>
<li>flea treatment</li>
<li>thunder</li>
<li>other cats</li>
</ol>
<figure>
<img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/cats.jpg" alt="Five cats looking around a field.">
<figcaption>Cats <strong>hate</strong> other cats.</figcaption>
</figure>
</section>
This whole block of code is the ‘second section’.
We know this because it starts with <section> and ends with </section>
and it is the 2nd time in the index.html that we see this element, so it is the 2nd one.
They asked you to add a 3rd section after the 2nd.
This means you should go and add a new empty line after the </section> of the 2nd section they presented to you in the editor, and create a new section element on that new line.