Learn CSS Colors by Building a Set of Colored Markers - Step 49

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

Hello there, I have been asked the following: In the .red CSS rule, change the background-color property to background , but I can’t pass
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>
    <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;
}
.red{background-color:rgb(255,0,0)
background: rgb (255, 0, 0)}

.green {
background-color: #007F00;
}

.blue {
background-color: hsl(240, 100%, 50%);
}

  **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Safari/605.1.15

Challenge: Learn CSS Colors by Building a Set of Colored Markers - Step 49

Link to the challenge:

You have to delete your background-color property completely but it won’t run on Safari. Try changing your browser.

Thanks, will it be more compatible with Chrome?