--description--

Classes allow you to use the same CSS styles on multiple HTML elements. You can see this by applying your red-text class to the first p element.

--hints--

Your h2 element should be red.

const h2Element = document.querySelector('h2');
const color = window.getComputedStyle(h2Element)['color']; 
assert.strictEqual(color, 'rgb(255, 0, 0)');

Your h2 element should have the class red-text.

assert.isTrue(document.querySelector('h2').classList.contains('red-text'));

Your first p element should be red.

const paragraph = document.querySelectorAll('p')[0];
const color = window.getComputedStyle(paragraph )['color'];
assert.strictEqual(color, 'rgb(255, 0, 0)');

Your second and third p elements should not be red.

const paragraph2 = document.querySelectorAll('p')[1];
const paragraph3 = document.querySelectorAll('p')[2];

const color2 = window.getComputedStyle(paragraph2)['color'];
const color3 = window.getComputedStyle(paragraph3)['color'];

assert.notStrictEqual(color2, 'rgb(255, 0, 0)');
assert.notStrictEqual(color3, 'rgb(255, 0, 0)');

Your first p element should have the class red-text.

assert.isTrue(document.querySelectorAll('p')[0].classList.contains('red-text'));

--seed--

--seed-contents--

html

<style>
  .red-text {
    color: red;
  }
</style>

<h2 class="red-text">CatPhotoApp</h2>
<main>
  <p>Click here to view more <a href="#">cat photos</a>.</p>

  <a href="#"></a>

  <div>
    <p>Things cats love:</p>
    <ul>
      <li>catnip</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>

    <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>

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

--solutions--