diff --git a/index.html b/index.html
index 5a581ae..fbec2d0 100644
--- a/index.html
+++ b/index.html
@@ -17,6 +17,7 @@
         <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
         <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.0/css/bulma.min.css">
         <link rel="stylesheet" href="./css/bulma-adjustments.css">
+	<link rel="stylesheet" href="./css/duplicate-subjects.css">
     </head>
     <body>
         <script></script>