<h2>CatPhotoApp</h2>
<main>
  <p>Click here to view more <a href="#">cat photos</a>.</p>
  
  <a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></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>
  <form action="/submit-cat-photo">
    <input id="indoor" type="radio" name="indoor-outdoor">
    <label for="indoor">Indoor</label>
    
    <input type="text" placeholder="cat photo URL" required>    
    <button type="submit">Submit</button>
  </form>
</main>
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Add a pair of radio buttons to your form. One should have the option of indoor and the other should have the option of outdoor. Both should share the name attribute of indoor-outdoor.
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