Step 67 stuck added the code but its not completing

Tell us what’s happening:
Describe your issue in detail here.
i am informed to add the !doctype HTML tag to the top of the page but it’s not working.

  **Your code so far**
<!DOCTYPE html lang="en">
<head>
  <title>CatPhotoApp</title>
</head>
<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">
        <fieldset>
          <legend>Is your cat an indoor or outdoor cat?</legend>
          <label><input id="indoor" type="radio" name="indoor-outdoor" value="indoor" checked> Indoor</label>
          <label><input id="outdoor" type="radio" name="indoor-outdoor" value="outdoor"> Outdoor</label>
        </fieldset>
        <fieldset>
          <legend>What's your cat's personality?</legend>
          <input id="loving" type="checkbox" name="personality" value="loving" checked> <label for="loving">Loving</label>
          <input id="lazy" type="checkbox" name="personality" value="lazy"> <label for="lazy">Lazy</label>
          <input id="energetic" type="checkbox" name="personality" value="energetic"> <label for="energetic">Energetic</label>
        </fieldset>
        <input type="text" name="catphotourl" placeholder="cat photo URL" required>
        <button type="submit">Submit</button>
      </form>
    </section>
  </main>
  <footer>
    <p>
      No Copyright - <a href="https://www.freecodecamp.org">freeCodeCamp.org</a>
    </p>
  </footer>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36

Challenge: Step 67

Link to the challenge:

You removed the html element. And the doctype tag doesn’t take the lang attribute. I would restart the step to get the original HTML back and then only add the tag that the instructions ask you to. They give you an example of what that should be in the first sentence. Do not change any of the HTML.

so what i did was
!DOCTYPE HTML
HTML lang=“en”

and that fixed it