Help pliz am stuck on this exercsie

You should use the given CSS for the box-shadow do i do this??

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 (Windows NT 6.3; WOW64; rv:62.0) Gecko/20100101 Firefox/62.0.

Link to the challenge:

The last value should be 0.19 and you have put a comma instead.
Same goes for this.

Does this help?

the rgba consist of 4 values (r,g,b,a) where as your code for box-shadow: 0 10px 20px rgba(0,0,0,0,19), 0 6px 6px rgba(0,0,0,0,23) is more than 4.
try the below value
box-shadow:0 10px 20px rgba (255, 0 ,255, 0.9)

thanx alot sorry for the late reply