Footer and Header Includes added

adventskalender/index.php

@@ -7,6 +7,8 @@
   <link rel="stylesheet" href="shared/css/style.css">
 </head>
 <body>
+  <?php include __DIR__ . '/includes/header.html'; ?>
+
   <main>
     <h1>🎄 Bratonien Adventskalender</h1>
     <p>Willkommen im Adventskalender-Archiv von Bratonien.</p>
@@ -17,5 +19,7 @@
       </ul>
     </section>
   </main>
+
+  <?php include __DIR__ . '/includes/footer.html'; ?>
 </body>
-</html>
+</html>