I solve this problem but was not able to solve just the following the error so can help me to solve this.
Each of your two radio button elements should be nested in its own label
element.
**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</button>
<input id="indoor" type="radio" name="indoor-outdoor">
<label for="indoor">Indoor</label>
<input id="indoor" type="radio" name="indoor-outdoor">
<label for="indoor">outdoor</label>
</form>
</main>
**Your browser information:**
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.99 Safari/537.36
Challenge: Create a Set of Radio Buttons
Link to the challenge: