Learn Basic CSS by Building a Cafe Menu - Step 17

I am getting error that meta element should have content attribute but as you can see I have written it already. Please help me if possible.

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width,     initial-scale=1.0">
    <meta charset="utf-8">
    <title>Cafe Menu</title>
    <link href="styles.css" rel="stylesheet"/>
  </head>
  <body>
    <main>
      <header>
        <h1>CAMPER CAFE</h1>
        <p>Est. 2020</p>
      </header>
      <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; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.65

Challenge: Learn Basic CSS by Building a Cafe Menu - Step 17

Link to the challenge:

Try to remove the extra spaces after the comma (it worked when I erased those)