diff --git a/theme/userchrome.css b/theme/userchrome.css
index 29d1c9c..9cf054f 100644
--- a/theme/userchrome.css
+++ b/theme/userchrome.css
@@ -194,9 +194,6 @@ a.button.disabled {
   min-width: 150px !important;
   width: 100% !important;
 }
-.rli-root > .resizableLayoutItem > .resizableLayoutItem {
-  border-bottom: var(--default-border) !important;
-}
 .rli-root > .resizableLayoutItem > .resizableLayoutItem > div {
   height: 100% !important;
   width: 100% !important;