Meta element won't pass me

Tell us what’s happening:
I fill in the correct meta element content yet it won’t pass me

  **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>Cafe Menu</title>
  <link href="styles.css" rel="stylesheet" type="text/css" />
</head>
<body>
  <header>
    <h1>CAMPER CAFE</h1>
    <p>Est. 2020</p>
  </header>
  <main>
    <section>
      <h2>Coffee</h2>
    </section>
  </main>
</body>
<html>
/* file: styles.css */
h1, h2, p {
text-align: center;
}
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0

Challenge: Step 18

Link to the challenge:

It works for me, so there must be a minor error with your server or something.
Try cutting and repasting your code: that sometimes works.