Error message: "Each of your radio button elements should be added within the form tag."

What am I doing wrong here? here is my form code:


Thanks for any and all help.

The challenge url is:
https://learn.freecodecamp.org/responsive-web-design/basic-html-and-html5/create-a-set-of-radio-buttons

<form action="/submit-cat-photo">
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button><p>
    <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>
  </p>
  </form>

The radio button ended up next to the submit button, not underneath, which looked sloppy. But removing them seems to have worked, than you.

Thanks for telling me about the backticks.