diff --git a/demo/src/app/components/popover/demos/container/container.html b/demo/src/app/components/popover/demos/container/container.html
index ea31a92817..9e0298c208 100644
--- a/demo/src/app/components/popover/demos/container/container.html
+++ b/demo/src/app/components/popover/demos/container/container.html
@@ -1,5 +1,5 @@
 <div class="row panel" style="position: relative; overflow: hidden;">
-  <div class="card panel-body">
+  <div class="card-block panel-body">
     <button type="button" class="btn btn-danger"
             popover="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
       Default popover