diff --git a/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/main/_collapsible-blocks.less b/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/main/_collapsible-blocks.less
index 2a188a0331cd8..248c7d2947174 100644
--- a/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/main/_collapsible-blocks.less
+++ b/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/main/_collapsible-blocks.less
@@ -163,6 +163,14 @@
     &.collapsible-block-wrapper-last {
         border-bottom: 0;
     }
+
+    .admin__dynamic-rows.admin__control-collapsible {
+        td {
+            &.admin__collapsible-block-wrapper {
+                border-bottom: none;
+            }
+        }
+    }
 }
 
 .admin__collapsible-content {