diff --git a/scm-ui/styles/scm.scss b/scm-ui/styles/scm.scss
index 6c64849cd0..09a4eb5c27 100644
--- a/scm-ui/styles/scm.scss
+++ b/scm-ui/styles/scm.scss
@@ -275,6 +275,14 @@ ul.is-separated {
   .panel-block {
     display: block;
     border: none;
+
+    & .comment-wrapper:first-child div:first-child {
+      border-top: none;
+    }
+
+    & .diff-widget-content div {
+      border-bottom: none;
+    }
   }
 
   .panel-footer {