creado jump.php

app/inc/header.php

@@ -23,7 +23,7 @@
                         <a class="nav-link active" aria-current="page" href="/">Inicio</a>
                     </li>
                     <li class="nav-item">
-                        <a class="nav-link active" aria-current="page" href="jump">Jumping!</a>
+                        <a class="nav-link active" aria-current="page" href="jump.php">Jumping!</a>
                     </li>
                     <li class="nav-item">
                         <a class="nav-link" href="word">Words! </a>

app/jump.php

@@ -0,0 +1,21 @@
+<?php include_once "./inc/header.php"; ?>
+
+<?php
+$jump = "Jump high superstar";
+?>
+
+<div class="card text-center">
+    <div class="card-header">
+        Jump en variable
+    </div>
+    <div class="card-body text-center">
+        <h2 class="fs-1 fst-italic fw-bold">
+            <?php echo $jump ?>
+        </h2>
+    </div>
+    <div class="card-footer text-body-secondary">
+        Jump en variable
+    </div>
+</div>
+
+<?php include_once "./inc/footer.php"; ?>