Help out, been stuck to these

It telling me each radio button element should be added within the form tag:

  **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 </label>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Linux; Android 4.4.2; SM-G386T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36.

Challenge: Create a Set of Radio Buttons

Link to the challenge:

this is your form tag, you have added the input element after it, not inside it, that’s why you get the error