--description--

The btn-primary class is the main color you'll use in your app. It is useful for highlighting actions you want your user to take.

Replace Bootstrap's btn-default class with btn-primary in your button.

Note that this button will still need the btn and btn-block classes.

--hints--

Your button should have the class btn-primary.

assert.isTrue(document.querySelector('button')?.classList?.contains('btn-primary'));

Your button should still have the btn and btn-block classes.

assert.isTrue(document.querySelector('button')?.classList?.contains('btn-block'));
assert.isTrue(document.querySelector('button')?.classList?.contains('btn'));

All your button elements should have closing tags.

assert.match(code,/<\/button>/g);
assert.match(code,/<button/g);
assert.equal(code.match(/<\/button>/g).length , code.match(/<button/g).length);

--seed--

--seed-contents--

html

<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
  .red-text {
    color: red;
  }

  h2 {
    font-family: Lobster, Monospace;
  }

  p {
    font-size: 16px;
    font-family: Monospace;
  }

  .thick-green-border {
    border-color: green;
    border-width: 10px;
    border-style: solid;
    border-radius: 50%;
  }

  .smaller-image {
    width: 100px;
  }
</style>

<div class="container-fluid">
  <h2 class="red-text text-center">CatPhotoApp</h2>

  <p>Click here for <a href="#">cat photos</a>.</p>

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

  
  <button class="btn btn-default btn-block">Like</button>
  <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>
  <form action="https://freecatphotoapp.com/submit-cat-photo">
    <label><input type="radio" name="indoor-outdoor"> Indoor</label>
    <label><input type="radio" name="indoor-outdoor"> Outdoor</label>
    <label><input type="checkbox" name="personality"> Loving</label>
    <label><input type="checkbox" name="personality"> Lazy</label>
    <label><input type="checkbox" name="personality"> Crazy</label>
    <input type="text" placeholder="cat photo URL" required>
    <button type="submit">Submit</button>
  </form>
</div>

--solutions--