diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..7c2feb7
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+  "editor.formatOnSave": false
+}
diff --git a/src/pages/404.astro b/src/pages/404.astro
new file mode 100644
index 0000000..e140464
--- /dev/null
+++ b/src/pages/404.astro
@@ -0,0 +1,18 @@
+---
+import Layout from "../layouts/BaseLayout.astro";
+---
+
+<Layout>
+	<div style="text-align:center;">
+		<h1>404</h1>
+		<p><strong>Page not found</strong></p>
+		<p>
+			<small>
+				If you see this message, please
+				<a href=`mailto:valentin@popov.link?subject=${encodeURIComponent('I found a broken page')}`>
+					let me know
+				</a>
+			</small>
+		</p>
+	</div>
+</Layout>