diff --git a/404.html b/404.html
deleted file mode 100644
index 47bab16..0000000
--- a/404.html
+++ /dev/null
@@ -1,9 +0,0 @@
----
-title: Page non trouvée – Page not found!
-layout: default
----
-
-*cette page n'existe pas…*
-
-4∅4
-
diff --git a/404.markdown b/404.markdown
new file mode 100644
index 0000000..0ec4ee5
--- /dev/null
+++ b/404.markdown
@@ -0,0 +1,11 @@
+---
+title: Page non trouvée – Page not found!
+layout: default
+---
+
+
+4∅4
+
+*Cette page n'existe pas…*
+*...this page does not exist!*{: .float-right }
+