Learn CSS Colors by Building a Set of Colored Markers - Step 78

Correct Answer not accepted:
Why is freecampcamp terminal not accepting correct answers? This is not the first time and it kills my time allotted for study. Please someone give me answer not same as before…

  **Your code so far**
<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Colored Markers</title>
  <link rel="stylesheet" href="styles.css">
</head>
<body>
  <h1>CSS Color Markers</h1>
  <div class="container">
    <div class="marker red">
      <div class="cap"></div>
      <div class="sleeve"></div>
    </div>
    <div class="marker green">
    </div>
    <div class="marker blue">
    </div>
  </div>
</body>
</html>
/* file: styles.css */
h1 {
text-align: center;
}

.container {
background-color: rgb(255, 255, 255);
padding: 10px 0;
}

.marker {
width: 200px;
height: 25px;
margin: 10px auto;
}

.cap {
width: 60px;
height: 25px;
}

.sleeve {
width: 110px;
height: 25px;
background-color: rgba(255, 255, 255, 0.5);
}

.cap {
display: inline-block;
}
.sleeve {
display: inline-block;
}

.red {
background: linear-gradient(rgb(122, 74, 14), rgb(245, 62, 113), rgb(162, 27, 27));
}

.green {
background: linear-gradient(#55680D, #71F53E, #116C31);
}

.blue {
background: linear-gradient(hsl(186, 76%, 16%), hsl(223, 90%, 60%), hsl(240, 56%, 42%));
}

  **Your browser information:**

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Challenge: Learn CSS Colors by Building a Set of Colored Markers - Step 78

Link to the challenge:

Create a new rule to target both the cap and sleeve classes, and set display to inline-block .

You need to have a selector that target the .cap and .sleeve elements at the same time, a selector list