diff --git a/call-for-nodes.html b/call-for-nodes.html
index 2cbf545..1e33a94 100644
--- a/call-for-nodes.html
+++ b/call-for-nodes.html
@@ -7,8 +7,15 @@
 <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui, viewport-fit=cover"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="default"> <meta name="format-detection" content="telephone=no"> <meta name="msapplication-tap-highlight" content="no"> 
 <title>CALL FOR NODES -- Trans HacKmeeting 2018</title> 
 <link rel="stylesheet" type="text/css" href="style.css">
+  <style type="text/css" media="screen">
+    body {
+          background-color: #000;
+          color: green;
+    }
+  </style>
 </head> 
-<body background="black"; color="green";>
+<body>
+
 <header> 
 
 <img src="logo_hm_bologna.png" class="logo">    
