diff --git a/_layouts/page.html b/_layouts/page.html
index f5c3b01b95c967c9c06ed5cba318282bcb4ba204..d100bf3b8ea717dbbcd3c10b201ff40decc317c8 100644
--- a/_layouts/page.html
+++ b/_layouts/page.html
@@ -7,7 +7,7 @@
     $header$
   </head>
   <body class="lesson">
-    <div class="container">
+    <div class="container card">
       $banner$
       <div class="row">
         <div class="col-md-10 col-md-offset-1">