Learn CSS Flexbox by Building a Photo Gallery - Step 5

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">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Photo Gallery</title>
<link rel="stylesheet" href="./styles.css">
</head>
<body>
<div class="header">
  <h1>CSS FLEXBOX PHOTO GALLERY</h1>
</div>
<div class="gallery">
  <img>
  <img>
  <img>
  <img>
  <img>
  <img>
  <img>
  <img>
  <img>
  </div>
</body>
</html>
/* file: styles.css */

  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Challenge: Learn CSS Flexbox by Building a Photo Gallery - Step 5

Link to the challenge:

Welcome to the forum!

What issues do you have with this challenge step?