I dont understand what it says

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

  **Your code so far**
/* file: index.html */
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8" />
  <title>Cafe Menu</title>
  <style>
    h1, h2, p {
      text-align: center;
    }
  </style>
</head>
<body>
  <header>
    <h1>CAMPER CAFE</h1>
    <p>Est. 2020</p>
  </header>
  <main>
    <section>
      <h2>Coffee</h2>
    </section>
  </main>
</body>
<html>
/* file: styles.css */
<style>
h1, h2, p {text-align:"center";}
</style>

  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36

Challenge: Step 15

Link to the challenge:

You have written the CSS correctly but you didn’t follow this part of the instructions:

“Make sure to exclude the opening and closing style tags.”

In other words, do not add opening <style> and closing </style> tags to the styles.css file.