Learn HTML by Building a Cat Photo App - Step 46

Tell us what’s happening:
Describe your issue in detail here.
im confused on to where or what the id element is i googled and it said it uses a # and {} but not sure exactly where to put them

Your code so far

<html>
  <body>
    <h1>CatPhotoApp</h1>
    <main>
      <section>
        <h2>Cat Photos</h2>
        <!-- TODO: Add link to cat photos -->
        <p>Click here to view more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a>.</p>
        <a href="https://freecatphotoapp.com"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
      </section>
      <section>
        <h2>Cat Lists</h2>
        <h3>Things cats love:</h3>
        <ul>
          <li>cat nip</li>
          <li>laser pointers</li>
          <li>lasagna</li>
        </ul>
        <figure>
          <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/lasagna.jpg" alt="A slice of lasagna on a plate.">
          <figcaption>Cats <em>love</em> lasagna.</figcaption>  
        </figure>
        <h3>Top 3 things cats hate:</h3>
        <ol>
          <li>flea treatment</li>
          <li>thunder</li>
          <li>other cats</li>
        </ol>
        <figure>
          <img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/cats.jpg" alt="Five cats looking around a field.">
          <figcaption>Cats <strong>hate</strong> other cats.</figcaption>  
        </figure>
      </section>
      <section>
        <h2>Cat Form</h2>
        <form action="https://freecatphotoapp.com/submit-cat-photo">
          <label><input type="radio"{id indoor}"> Indoor</label>
          <input type="text" name="catphotourl" placeholder="cat photo URL" required>
          <button type="submit">Submit</button>
        </form>
      </section>
    </main>
  </body>
</html>

Your browser information:

User Agent is: Mozilla/5.0 (X11; CrOS x86_64 14989.107.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Challenge: Learn HTML by Building a Cat Photo App - Step 46

Link to the challenge:

the code given is:
<label><input type="radio"> Indoor</label>
And you need to add an id attribute to it.

All html attributes are words (keywords) that are added to the opening tag of the respective element.

For eg, the input element above has an attribute.
It has a type attribute which equals “radio”.

Again, all attributes are added to the opening tag.

You can add them with one space between each statement.

An eg of an attribute statement is
type="input"

So again here is that code
<label><input type="radio"> Indoor</label>

you need to add an id attribute statement to the opening tag
(it should look very much like the type statement but it is called id and has a different value)