Learn CSS Colors by Building a Set of Colored Markers - Step 4

I cant not understand why I’m not passing the Validation for this step. Can not think of any other way to write this charset. I’ve copy pasted the same exact code from the web and forums. I just want to get to the next step. Thank you

  **Your code so far**
<!DOCTYPE html>
<html lang="en">
<head>
  <title>Colored Markers</title>
  <meta charset="utf-8">
</head>
<body>
</body>
</html>

Challenge: Learn CSS Colors by Building a Set of Colored Markers - Step 4

Link to the challenge:

I would try a different browser, especially if you are using Safari. Apple ignores various web standards from time to time.