Stuck on the step 15

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 */
h1, h2, p {}


   **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0

Challenge: Step 15

Link to the challenge:

Just cut and past the style from the style tag.

define property in between curly brackets