Discerning issues with <link> element

Tell us what’s happening:
Describe your issue in detail here.
I cannot understand why I cannot progress past this point - the feedback I am getting is that there is something wrong about the element. What is wrong with it?

  **Your code so far**
<!DOCTYPE html>
<html>
<head>
  <title>Registration Form</title>
  <link rel="stylesheet" type="text/css" href="styles.css">
  
</head>
<body>
</body>
</html>
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.36

Challenge: Step 4

Link to the challenge:

Ah problem resolved!