diff --git a/index.html b/index.html
index f08c36a..dbed98f 100644
--- a/index.html
+++ b/index.html
@@ -25,7 +25,59 @@
 
 <body>
   
-  <main>
+  <header class="site-header">
+    <a class="logo" href="/">Logo</a>
+  
+    <nav class="desktop-nav" aria-label="Primary navigation">
+      <ul>
+        <li><a href="#">Home</a></li>
+        <li><a href="#">Work</a></li>
+        <li><a href="#">About</a></li>
+        <li><a href="#">Contact</a></li>
+      </ul>
+    </nav>
+  
+    <button
+      class="menu-toggle"
+      id="menuToggle"
+      type="button"
+      aria-expanded="false"
+      aria-controls="mobileMenu"
+      aria-haspopup="true"
+      aria-label="Open menu"
+    >
+      <span></span>
+      <span></span>
+      <span></span>
+    </button>
+  </header>
+  
+  <div class="menu-overlay" id="menuOverlay" hidden></div>
+  
+  <aside
+    class="mobile-menu"
+    id="mobileMenu"
+    aria-label="Mobile navigation"
+    aria-hidden="true"
+  >
+    <div class="mobile-menu__header">
+      <strong>Menu</strong>
+      <button class="menu-close" id="menuClose" type="button" aria-label="Close menu">
+        ✕
+      </button>
+    </div>
+  
+    <nav aria-label="Mobile navigation">
+      <ul>
+        <li><a href="#">Home</a></li>
+        <li><a href="#">Work</a></li>
+        <li><a href="#">About</a></li>
+        <li><a href="#">Contact</a></li>
+      </ul>
+    </nav>
+  </aside>
+  
+  <main id="siteContent" class="page-content">
     
     <!-- target="_blank" rel="noopener noreferrer" -->
     
@@ -69,7 +121,7 @@
     
   </main>
   <!-- Add your site or application content here -->
-  <!-- <script src="js/app.js"></script> -->
+  <script src="js/app.js"></script>
 
 </body>
 
