diff --git a/src/components/Header.astro b/src/components/Header.astro
index 352d007..e08f20b 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -1,57 +1,80 @@
 <header>
   <div class="nav-container">
-    <a href="/" class="logo">AstroPaper</a>
-    <nav>
+    <div class="top-nav-wrap">
+      <a href="/" class="logo">AstroPaper</a>
+      <button class="hamburger-menu">
+        <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24"
+          ><path d="M4 6h16v2H4zm4 5h12v2H8zm5 5h7v2h-7z"></path>
+        </svg>
+      </button>
+    </div>
+    <nav class="display-none sm:flex">
       <ul>
         <li><a href="/posts">Posts</a></li>
         <li><a href="/tags">Tags</a></li>
         <li><a href="/about">About</a></li>
       </ul>
-      <button>
-        <svg xmlns="http://www.w3.org/2000/svg"
-          ><path
-            d="M19.023 16.977a35.13 35.13 0 0 1-1.367-1.384c-.372-.378-.596-.653-.596-.653l-2.8-1.337A6.962 6.962 0 0 0 16 9c0-3.859-3.14-7-7-7S2 5.141 2 9s3.14 7 7 7c1.763 0 3.37-.66 4.603-1.739l1.337 2.8s.275.224.653.596c.387.363.896.854 1.384 1.367l1.358 1.392.604.646 2.121-2.121-.646-.604c-.379-.372-.885-.866-1.391-1.36zM9 14c-2.757 0-5-2.243-5-5s2.243-5 5-5 5 2.243 5 5-2.243 5-5 5z"
-          ></path>
-        </svg>
-      </button>
-      <button id="theme-btn">
-        <svg xmlns="http://www.w3.org/2000/svg" id="moon-svg"
-          ><path
-            d="M20.742 13.045a8.088 8.088 0 0 1-2.077.271c-2.135 0-4.14-.83-5.646-2.336a8.025 8.025 0 0 1-2.064-7.723A1 1 0 0 0 9.73 2.034a10.014 10.014 0 0 0-4.489 2.582c-3.898 3.898-3.898 10.243 0 14.143a9.937 9.937 0 0 0 7.072 2.93 9.93 9.93 0 0 0 7.07-2.929 10.007 10.007 0 0 0 2.583-4.491 1.001 1.001 0 0 0-1.224-1.224zm-2.772 4.301a7.947 7.947 0 0 1-5.656 2.343 7.953 7.953 0 0 1-5.658-2.344c-3.118-3.119-3.118-8.195 0-11.314a7.923 7.923 0 0 1 2.06-1.483 10.027 10.027 0 0 0 2.89 7.848 9.972 9.972 0 0 0 7.848 2.891 8.036 8.036 0 0 1-1.484 2.059z"
-          ></path>
-        </svg>
-        <svg xmlns="http://www.w3.org/2000/svg" id="sun-svg"
-          ><path
-            d="M6.993 12c0 2.761 2.246 5.007 5.007 5.007s5.007-2.246 5.007-5.007S14.761 6.993 12 6.993 6.993 9.239 6.993 12zM12 8.993c1.658 0 3.007 1.349 3.007 3.007S13.658 15.007 12 15.007 8.993 13.658 8.993 12 10.342 8.993 12 8.993zM10.998 19h2v3h-2zm0-17h2v3h-2zm-9 9h3v2h-3zm17 0h3v2h-3zM4.219 18.363l2.12-2.122 1.415 1.414-2.12 2.122zM16.24 6.344l2.122-2.122 1.414 1.414-2.122 2.122zM6.342 7.759 4.22 5.637l1.415-1.414 2.12 2.122zm13.434 10.605-1.414 1.414-2.122-2.122 1.414-1.414z"
-          ></path>
-        </svg>
-      </button>
+      <div class="button-wrapper">
+        <button>
+          <svg xmlns="http://www.w3.org/2000/svg"
+            ><path
+              d="M19.023 16.977a35.13 35.13 0 0 1-1.367-1.384c-.372-.378-.596-.653-.596-.653l-2.8-1.337A6.962 6.962 0 0 0 16 9c0-3.859-3.14-7-7-7S2 5.141 2 9s3.14 7 7 7c1.763 0 3.37-.66 4.603-1.739l1.337 2.8s.275.224.653.596c.387.363.896.854 1.384 1.367l1.358 1.392.604.646 2.121-2.121-.646-.604c-.379-.372-.885-.866-1.391-1.36zM9 14c-2.757 0-5-2.243-5-5s2.243-5 5-5 5 2.243 5 5-2.243 5-5 5z"
+            ></path>
+          </svg>
+        </button>
+        <button id="theme-btn">
+          <svg xmlns="http://www.w3.org/2000/svg" id="moon-svg"
+            ><path
+              d="M20.742 13.045a8.088 8.088 0 0 1-2.077.271c-2.135 0-4.14-.83-5.646-2.336a8.025 8.025 0 0 1-2.064-7.723A1 1 0 0 0 9.73 2.034a10.014 10.014 0 0 0-4.489 2.582c-3.898 3.898-3.898 10.243 0 14.143a9.937 9.937 0 0 0 7.072 2.93 9.93 9.93 0 0 0 7.07-2.929 10.007 10.007 0 0 0 2.583-4.491 1.001 1.001 0 0 0-1.224-1.224zm-2.772 4.301a7.947 7.947 0 0 1-5.656 2.343 7.953 7.953 0 0 1-5.658-2.344c-3.118-3.119-3.118-8.195 0-11.314a7.923 7.923 0 0 1 2.06-1.483 10.027 10.027 0 0 0 2.89 7.848 9.972 9.972 0 0 0 7.848 2.891 8.036 8.036 0 0 1-1.484 2.059z"
+            ></path>
+          </svg>
+          <svg xmlns="http://www.w3.org/2000/svg" id="sun-svg"
+            ><path
+              d="M6.993 12c0 2.761 2.246 5.007 5.007 5.007s5.007-2.246 5.007-5.007S14.761 6.993 12 6.993 6.993 9.239 6.993 12zM12 8.993c1.658 0 3.007 1.349 3.007 3.007S13.658 15.007 12 15.007 8.993 13.658 8.993 12 10.342 8.993 12 8.993zM10.998 19h2v3h-2zm0-17h2v3h-2zm-9 9h3v2h-3zm17 0h3v2h-3zM4.219 18.363l2.12-2.122 1.415 1.414-2.12 2.122zM16.24 6.344l2.122-2.122 1.414 1.414-2.122 2.122zM6.342 7.759 4.22 5.637l1.415-1.414 2.12 2.122zm13.434 10.605-1.414 1.414-2.122-2.122 1.414-1.414z"
+            ></path>
+          </svg>
+        </button>
+      </div>
     </nav>
   </div>
+  <hr />
 </header>
 
 <style>
-  header {
-    /* @apply bg-slate-700; */
+  hr {
+    @apply border-skin-line opacity-50 mx-4 max-w-3xl sm:mx-auto;
   }
   .nav-container {
-    @apply max-w-3xl mx-auto flex justify-between items-center py-8 border-b-2 border-opacity-40 border-b-skin-line;
+    @apply max-w-3xl mx-auto flex flex-col sm:flex-row justify-between items-center;
+    /* border-b-2 border-opacity-40 border-b-skin-line */
+  }
+  .top-nav-wrap {
+    @apply w-full p-4 sm:py-8 flex justify-between items-center;
   }
   .logo {
-    @apply font-semibold text-3xl;
+    @apply font-semibold text-xl sm:text-3xl;
+  }
+  .hamburger-menu {
+    @apply p-2 sm:hidden;
+  }
+  .hamburger-menu svg {
+    @apply fill-skin-base w-6 h-6;
   }
   nav {
-    @apply flex items-center space-x-2;
+    @apply w-full py-2 flex flex-col items-center sm:justify-end sm:flex-row sm:space-x-2 bg-skin-fill shadow sm:shadow-none;
   }
   nav ul {
-    @apply flex space-x-4;
+    @apply flex flex-col sm:flex-row sm:space-x-4;
   }
   nav li {
-    @apply py-2;
+    @apply py-2 text-center my-2;
   }
   nav a {
     @apply py-2 px-3 font-medium hover:text-skin-accent;
   }
+  .button-wrapper {
+    @apply flex my-2 sm:space-x-2;
+  }
   nav button {
     @apply p-2;
   }
@@ -61,9 +84,9 @@
 </style>
 
 <script>
+  // Toggle Theme
   const themeBtn = document.querySelector("#theme-btn");
   const htmlClassList = document.querySelector("html")?.classList;
-
   themeBtn?.addEventListener("click", function () {
     if (htmlClassList?.contains("theme-dark")) {
       localStorage.setItem("theme", "light");
@@ -73,4 +96,15 @@
       htmlClassList?.add("theme-dark");
     }
   });
+
+  // Toggle menu
+  const menuBtn = document.querySelector(".hamburger-menu");
+  const navClassList = document.querySelector("nav")?.classList;
+  menuBtn!.addEventListener("click", function () {
+    if (navClassList?.contains("display-none")) {
+      navClassList?.remove("display-none");
+    } else {
+      navClassList?.add("display-none");
+    }
+  });
 </script>