<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head></head>
<body>
<div th:fragment="header(title)">
    <div style="background-color: #0056b3; color: #ffffff; text-align: left; padding: 20px;">
        <h1 style="font-size: 24px; margin: 0;" th:text="${title}">Default Header</h1>
    </div>
</div>
</body>
</html>
