diff --git a/src/routes/+error.svelte b/src/routes/+error.svelte
new file mode 100644
index 0000000..d1558bc
--- /dev/null
+++ b/src/routes/+error.svelte
@@ -0,0 +1,26 @@
+<svelte: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" />
+  <link rel="icon" type="image/x-icon" href="/favicon.png" />
+  <link rel="stylesheet" href="/styles/404style.css" type="text/css">
+  <title>404</title>
+  <script
+    async
+    src="https://www.googletagmanager.com/gtag/js?id=G-WYMPR3XD1M"
+  ></script>
+  <script>
+    window.dataLayer = window.dataLayer || [];
+    function gtag() {
+      dataLayer.push(arguments);
+    }
+    gtag("js", new Date());
+
+    gtag("config", "G-WYMPR3XD1M");
+  </script>
+</svelte:head>
+
+<body>
+  <h1><a href="/">gå til hjem siden</a></h1>
+    <img src="https://http.cat/images/404.jpg" alt="where the cat go?" class="center"/>
+</body>
