diff --git a/ogcardeck/cards.html b/ogcardeck/cards.html
index ae2f99c..73e5c7e 100644
--- a/ogcardeck/cards.html
+++ b/ogcardeck/cards.html
@@ -4,7 +4,7 @@
     <head>
         <meta charset="utf-8">
         <title>Oracolotto</title>
-        <link href="stylesheet.css" type="text/html">
+        <link href="stylesheet.css" rel="stylesheet">
         <script src="circletype.min.js"></script>
 
     </head>
