diff --git a/threadr/board/default.php b/threadr/board/default.php
index 48dbd8b..fe3638c 100644
--- a/threadr/board/default.php
+++ b/threadr/board/default.php
@@ -12,7 +12,7 @@ $id=$_GET['id'];
       %STYLESHEET%
       <!--<meta name="viewport" content="width=device-width, initial-scale=1.0"> ToDo: ?-->
   </head>
-  <body>
+  <body class="iframe">
     <?php
       echo "<a href='%CONTENT_DIR%/board/post.php?id=$id'><button> Post something </button></a>";
     ?>
