Issue with css code

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

in CSS colors markers I stock in this step:

In the .red CSS rule, change the background-color property to background .

I Write this line

.red {background: rgb(255, 0, 0); }

the program give me this result:

Test

Sorry, your code does not pass. Keep trying.

Hint

Your .red CSS rule should have a background property with the value rgb(255, 0, 0).

please tell me what’s the wrong?

  **Your code so far**
/* file: index.html */
<!DOCTYPE html>
<html>
<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: 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/14.1.2 Safari/605.1.15

Challenge: Step 49

Link to the challenge:

Your code works fine over here, try resetting the challenge and trying again.

Thank you for replying, I repeat the code several times and I get the same .
I works fine in the review screen but the program tells me there is a problem " Hint

Your .red CSS rule should have a background property with the value rgb(255, 0, 0)"


Screen Shot 1443-12-12 at 7.39.39 AM

same problem here
any tips?

consider using chrome

it doesn’t work on Safari