diff --git a/oef/templates/oef/output.html b/oef/templates/oef/output.html
index 33799c52..c86b4327 100644
--- a/oef/templates/oef/output.html
+++ b/oef/templates/oef/output.html
@@ -4,7 +4,7 @@
 
 
 {% block content %}
-    <table>
+    <table class="table">
         <tr>
             <th>Format name</th>
             <th>Action</th>
@@ -39,7 +39,7 @@
 
     <h3>Codesets</h3>
 
-    <table>
+    <table class="table">
 
         <tr><th>Codeset</th><th>Option</th></tr>
         {% for codeset, options in codesets %}