Can’t figure out

Tell us what’s happening:
Describe your issue in detail here.
So I’m going about this lesson, and I can’t find out what’s going on, so I remember that ids were used for internal links, but now what, it has I’d of thumbnail, I made a var with .thumbnail, that does not seem to be working, what now?

  **Your code so far**

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;

.thumbnail {
box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);

.fullCard {
  width: 245px;
  border: 1px solid #ccc;
  border-radius: 5px;
  margin: 10px 5px;
  padding: 4px;
.cardContent {
  padding: 10px;
.cardText {
  margin-bottom: 30px;
<div class="fullCard" id="thumbnail">
<div class="cardContent">
  <div class="cardText">
    <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 class="cardLinks">
    <a href="" target="_blank" class="links">Larry Page</a><br><br>
    <a href="" target="_blank" class="links">Sergey Brin</a>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/92 Version/11.1.1 Safari/605.1.15

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

Link to the challenge:

Hi @Void4DevYT !

Welcome to the forum!

If you want to reference an id in css you must use a # not a .

This is incorrect.

That syntax works for classes. Not ids.
Once you change to the correct symbol then the test will pass.

Thanks very much, I was on chrome beta mobile and I was thinking about vars, thanks!

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