Code not passing,don't know why

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="/submit-cat-photo">
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button>
    <input type="indoor" name="indoor-outdoor">Indoor
    <input type="outdoor" name="indoor-outdoor">Outdoor

Your browser information:

User Agent is: Mozilla/5.0 (X11; CrOS x86_64 10323.67.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.209 Safari/537.36.

Link to the challenge:

Take another look at the examples in the instructions. You are creating a radio button, so the type attribute of both input tags should be the same. Then, your options (indoor / outdoor) will go with a different attribute that you’re currently missing.

Hope that helps!

Your radio buttons should have type=“radio” and id=“indoor”

Look at the errors at the bottom and read them carefully. They tell you exactly what is wrong.