Learn HTML by Building a Cat Photo App - Step 51

Tell us what’s happening:
Describe your issue in detail here.
I dont understand what im doing wrong if I put the new field sets below the first ones ?

  **Your code so far**
<html>
<body>
  <h1>CatPhotoApp</h1>
  <main>
    <section>
      <h2>Cat Photos</h2>
      <!-- TODO: Add link to cat photos -->
      <p>Click here to view more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a>.</p>
      <a href="https://freecatphotoapp.com"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
    </section>
    <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>
    <section>
      <h2>Cat Form</h2>
      <form action="https://freecatphotoapp.com/submit-cat-photo">
        <fieldset>
          <legend>Is your cat an indoor or outdoor cat?</legend>
          <label><input id="indoor" type="radio" name="indoor-outdoor" value="indoor"> Indoor</label>
          <label><input id="outdoor" type="radio" name="indoor-outdoor" value="outdoor"> Outdoor</label>
        </fieldset>
        <fieldset>
        <input type="text" name="catphotourl" placeholder="cat photo URL" required>
        <button type="submit">Submit</button>
        </fieldset>
       
      </form>
    </section>
  </main>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15

Challenge: Learn HTML by Building a Cat Photo App - Step 51

Link to the challenge:

Actually you just have to add another empty fieldset tag.

<html>
  <body>
    <h1>CatPhotoApp</h1>
    <main>
      <section>
        <h2>Cat Photos</h2>
        <!-- TODO: Add link to cat photos -->
        <p>Click here to view more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a>.</p>
        <a href="https://freecatphotoapp.com"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
      </section>
      <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>
      <section>
        <h2>Cat Form</h2>
        <form action="https://freecatphotoapp.com/submit-cat-photo">
          <fieldset>
            <legend>Is your cat an indoor or outdoor cat?</legend>
            <label><input id="indoor" type="radio" name="indoor-outdoor" value="indoor"> Indoor</label>
            <label><input id="outdoor" type="radio" name="indoor-outdoor" value="outdoor"> Outdoor</label>
          </fieldset>
          <fieldset></fieldset>
          <input type="text" name="catphotourl" placeholder="cat photo URL" required>
          <button type="submit">Submit</button>
        </form>
      </section>
    </main>
  </body>
</html>

Thank you I realized my mistake!