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"></div><header><h1 text="CSS FLEXBOX PHOTO GALLERY">CSS FLEXBOX PHOTO GALLERY</h1></header>
</body>
</html>
/* file: styles.css */
**Your browser information:**
User Agent is: Mozilla/5.0 (Linux; Android 10; itel W6503) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.181 Mobile Safari/537.36
Challenge: Step 4
Link to the challenge: