From 524199296ea27ac6b24e0d062977b2a2372ec4cb Mon Sep 17 00:00:00 2001
From: Dima Arnautov <dmitrii.arnautov@elastic.co>
Date: Tue, 13 Jun 2023 18:49:30 +0200
Subject: [PATCH] panel border

---
 .../components/collapsible_panel/collapsible_panel.tsx   | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/x-pack/plugins/ml/public/application/components/collapsible_panel/collapsible_panel.tsx b/x-pack/plugins/ml/public/application/components/collapsible_panel/collapsible_panel.tsx
index 51de689a4fc28..61a3c8197bcd6 100644
--- a/x-pack/plugins/ml/public/application/components/collapsible_panel/collapsible_panel.tsx
+++ b/x-pack/plugins/ml/public/application/components/collapsible_panel/collapsible_panel.tsx
@@ -84,7 +84,14 @@ export const CollapsiblePanel: FC<CollapsiblePanelProps> = ({
           ) : null}
         </EuiFlexGroup>
       </EuiSplitPanel.Inner>
-      {isOpen ? <EuiSplitPanel.Inner grow={false}>{children}</EuiSplitPanel.Inner> : null}
+      {isOpen ? (
+        <EuiSplitPanel.Inner
+          css={{ borderTop: `${euiTheme.euiBorderWidthThin} solid ${euiTheme.euiBorderColor}` }}
+          grow={false}
+        >
+          {children}
+        </EuiSplitPanel.Inner>
+      ) : null}
     </EuiSplitPanel.Outer>
   );
 };