I keep getting this error message:
Each of your radio button elements should be added within the form tag.
**Your code so far**
<h2>CatPhotoApp</h2>
<main>
<p>Click here to view more <a href="#">cat photos</a>.</p>
<a href="#"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" 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="https://www.freecatphotoapp.com/submit-cat-photo">
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit
<label for="indoor">
<input id="indoor" type="radio" name="indoor-outdoor"> Indoor
</label>
<label for="outdoor">
<input id="outdoor" type="radio"
name="indoor-outdoor"> Outdoor
</label>
</button>
</form>
</main>
**Your browser information:**
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.74 Safari/537.36 Edg/99.0.1150.46
Challenge: Create a Set of Radio Buttons
Link to the challenge: