diff --git a/public/index.php b/public/index.php
index ca241f5..35648df 100644
--- a/public/index.php
+++ b/public/index.php
@@ -43,6 +43,7 @@ if (!empty($_GET['id']) and !($id = filter_var($_GET['id'], FILTER_VALIDATE_INT)
 }
 
 echo '
+<!doctype html>
 <style>
     body { font-family: Helvetica, Arial, Calibri; }
     code { font-size: 1.4em; }
@@ -90,6 +91,7 @@ foreach ($eventTypes as $type) {
     <p>' . $type['ereignistyp_explica'] . '</p>
 </div>
 <hr>
+
 ';
 
 }
