diff --git a/404.html b/404.html
new file mode 100644
index 0000000..87c771b
--- /dev/null
+++ b/404.html
@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>404 - Page Not Found</title>
+    <!-- Your CSS styles -->
+    <style>
+        /* Your styles from the original code */
+        html,
+        body {
+            --header-bg: #0f0c19;
+            --accent: #4e3aA3;
+            --body-fg: #9b7dff;
+
+            margin: 0;
+            padding: 0;
+            background-color: #0f0c19;
+            color: var(--body-fg);
+
+            font-family: 'Roboto Regular', sans-serif;
+            padding: 20px;
+        }
+
+        body * {
+            box-sizing: border-box;
+            line-height: 1.5em;
+        }
+
+        /* ... (rest of your styles) ... */
+
+        /* Additional styles for 404 page */
+        .error-container {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            flex-direction: column;
+            text-align: center;
+            height: 100vh;
+        }
+
+        .error-container h1 {
+            font-size: 4rem;
+            margin-bottom: 10px;
+        }
+
+        .error-container p {
+            font-size: 1.2rem;
+            color: #666;
+        }
+
+        .error-container a {
+            color: #009688;
+            text-decoration: none;
+        }
+
+        .error-container a:hover {
+            text-decoration: underline;
+        }
+    </style>
+</head>
+
+<body>
+    <div class="error-container">
+        <h1>404 - Page Not Found</h1>
+        <p>The page you are looking for might have been removed or is temporarily unavailable.</p>
+        <p>Go back to the <a href="/">homepage</a>.</p>
+    </div>
+</body>
+
+</html>
