Learn CSS Colors by Building a Set of Colored Markers - Step 18

Tell us what’s happening:
Describe your issue in detail here.

I created a class selector type called “maker one” in css which am trying to change it background
.maker one {
background-color :red;
}

<!-- 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 one">
      </div>
      <div class="marker">
      </div>
      <div class="marker">
      </div>
    </div>
  </body>
</html>
/* file: styles.css */
h1 {
  text-align: center;
}

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


/* User Editable Region */

 .marker one{
  background-color:red;
}

/* User Editable Region */


Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Challenge: Learn CSS Colors by Building a Set of Colored Markers - Step 18

Link to the challenge:

The instructions are asking you to create a new CSS rule that targets the class one. So you don’t need to include the marker class. Just the one class.