Invisible box-shadow?

I don’t see any box-shadow appearing in the preview, although TOP says my code is correct.


<style>
h4 {
  text-align: center;
  background-color: rgba(45, 45, 45, 0.1);
  padding: 10px;
  font-size: 27px;
}
p {
  text-align: justify;
}
.links {
  text-align: left;
  color: black;
}
.fullCard {
  width: 245px;
  border: 1px solid #ccc;
  border-radius: 5px;
  margin: 10px 5px;
  padding: 4px;
}
.cardContent {
  padding: 10px;
}
.cardText {
  margin-bottom: 30px;
  #thumbnail {
  box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  }
}
</style>
<div class="fullCard" id="thumbnail">
<div class="cardContent">
  <div class="cardText">
    <h4>Alphabet</h4>
    <hr>
    <p><em>Google was founded by Larry Page and Sergey Brin while they were <u>Ph.D. students</u> at <strong>Stanford University</strong>.</em></p>
  </div>
  <div class="cardLinks">
    <a href="https://en.wikipedia.org/wiki/Larry_Page" target="_blank" class="links">Larry Page</a><br><br>
    <a href="https://en.wikipedia.org/wiki/Sergey_Brin" target="_blank" class="links">Sergey Brin</a>
  </div>
</div>
</div>

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36.

Challenge: Add a box-shadow to a Card-like Element

Link to the challenge:

You put your #thumbnail declaration inside your .cardText declaration. This is not valid CSS.

Hmm… okay. That part was done for me by whoever wrote that learning objective. Thanks.

I’m not sure what you mean. This is the CSS code that the challenge starts with:

<style>
  h4 {
    text-align: center;
    background-color: rgba(45, 45, 45, 0.1);
    padding: 10px;
    font-size: 27px;
  }
  p {
    text-align: justify;
  }
  .links {
    text-align: left;
    color: black;
  }



  .fullCard {
    width: 245px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin: 10px 5px;
    padding: 4px;
  }
  .cardContent {
    padding: 10px;
  }
  .cardText {
    margin-bottom: 30px;
  }