added id for footer

pages/footer.php

@@ -3,6 +3,6 @@
 <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"
         integrity="sha384-kenU1KFdBIe4zVF0s0G1M5b4hcpxyD9F7jL+jjXkk+Q2h455rYXK/7HAuoJl+0I4"
         crossorigin="anonymous"></script>
-<footer>
+<footer id="footer">
     © Cristo 2023
 </footer>
\ No newline at end of file