diff --git a/12/index.html b/12/index.html
index 72da7d5..0ac9f3a 100644
--- a/12/index.html
+++ b/12/index.html
@@ -1,4 +1,12 @@
 <html>
+	<!DOCTYPE html>
+<html  lang="en">
+
+<head>
+	<meta charset="UTF-8">
+	<title>Special issue 12</title>
+  <link rel="stylesheet" type="text/css" href="style.css">
+</head>
 <body>
 This is special issue 12
 </body>
