CSS color property not working

[mr.10]

The challenge was to " Delete your h2 element’s style attribute, and instead create a CSS style block. Add the necessary CSS to turn all h2 elements blue."
Did so, yet still not working.
code so far

<style>
h2 {
  color: blue;
}
</style>
<h2>CatPhotoApp</h2>
<main>
<p>Click here to view more <a href="#">cat photos</a>.</p>

<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

<div>
  <p>Things cats love:</p>
  <ul>
    <li>cat nip</li>
    <li>laser pointers</li>
    <li>lasagna</li>
  </ul>
  <p>Top 3 things cats hate:</p>
  <ol>
    <li>flea treatment</li>
    <li>thunder</li>
    <li>other cats</li>
  </ol>
</div>

<form action="https://freecatphotoapp.com/submit-cat-photo">
  <label><input type="radio" name="indoor-outdoor" checked> Indoor</label>
  <label><input type="radio" name="indoor-outdoor"> Outdoor</label><br>
  <label><input type="checkbox" name="personality" checked> Loving</label>
  <label><input type="checkbox" name="personality"> Lazy</label>
  <label><input type="checkbox" name="personality"> Energetic</label><br>
  <input type="text" placeholder="cat photo URL" required>
  <button type="submit">Submit</button>
</form>
</main>

  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36

Challenge: Use CSS Selectors to Style Elements

Link to the challenge:

freeCodeCamp.org

[HawksSpawn]

Hi @mr.10 and welcome to the forum!!! I tried your code and I passed the test. Have you already tried disabling extensions like Dark Mode and Ad-Blockers? These can interfere with tests, and remember to set the browser zoom to 100%.

[mr.10]

Wow, that little shit had me going crazy since yesteday. Thanks a lot mate I disabled the dark mode and it worked. You rock my man