diff --git a/source/404.html b/source/404.html
deleted file mode 100644
index 63a3550..0000000
--- a/source/404.html
+++ /dev/null
@@ -1,25 +0,0 @@
----
-title: Page Not Found
-permalink: "/404"
----
-
-<!DOCTYPE html>
-<html>
-  <%- partial('head.html') %>
-  <style>
-    h1 {
-      font-size: 12em;
-      font-weight: 100;
-      margin: 0;
-    }
-  </style>
-  <body>
-    <%- partial('header.html') %>
-    <section class="page-section error-page">
-      <div class="container-narrow text-center py-md-8">
-        <h1>404</h1>
-        <p class="lead">This page could not be found</p>
-      </div>
-    </section>
-  </body>
-</html>
diff --git a/source/404.md b/source/404.md
new file mode 100644
index 0000000..1206f82
--- /dev/null
+++ b/source/404.md
@@ -0,0 +1,7 @@
+---
+title: Page Not Found
+permalink: "/404"
+---
+
+> `404`
+> This page could not be found
