<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Background Color</title>
<link rel="stylesheet" href="style.css" />
<script src="script.js" defer></script>
</head>
<body>
<button id="btn">Change Me</button>
</body>
</html>