diff --git a/extensions/sticky/less/sticky.less b/extensions/sticky/less/sticky.less
index a293b5f26..5cebfbfb4 100644
--- a/extensions/sticky/less/sticky.less
+++ b/extensions/sticky/less/sticky.less
@@ -16,6 +16,7 @@
   background: @fl-body-secondary-color;
   border-radius: @border-radius-base;
   padding: 10px 15px;
+  border-bottom: 2px dotted @fl-body-bg;
 
   .discussion-summary .info > li& {
     display: block;