Please help me I am trying to create a a radio button but it keep giving me an error message

Tell us what’s happening:

   **Your code so far**

 <p>Click here to view more <a href="#">cat photos</a>.</p>

 <a href="#"><img src="" alt="A cute orange cat lying on its back."></a>

 <p>Things cats love:</p>
   <li>cat nip</li>
   <li>laser pointers</li>
 <p>Top 3 things cats hate:</p>
   <li>flea treatment</li>
   <li>other cats</li>
 <form action="">
   <input type="text" placeholder="cat photo URL" required>
   <button type="submit">Submit</button>

<input type="radio" name= "indoor-outdoor">Indoor
<label><input type="radio" name= "indoor-outdoor">Outdoor
   **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36 Edg/87.0.664.57.

Challenge: Create a Set of Radio Buttons

Link to the challenge:

HI @steveboss008 !
Welcome to the forum!

This section for the html course teaches you how to build a form.

So your radio buttons need to be inside the form.

Right now they are outside of the form at the bottom of the page.