diff --git a/ram/portal/templates/bookshelf/book.html b/ram/portal/templates/bookshelf/book.html
index cf31a19..a67fd08 100644
--- a/ram/portal/templates/bookshelf/book.html
+++ b/ram/portal/templates/bookshelf/book.html
@@ -191,7 +191,7 @@
                   </table>
                   {% endif %}
                 </div>
-                <div class="tab-pane" id="nav-toc" role="tabpanel" aria-labelledby="nav-toc-tab">
+                <div class="tab-pane table-responsive" id="nav-toc" role="tabpanel" aria-labelledby="nav-toc-tab">
                   <table class="table table-striped">
                     <thead>
                       <tr>