diff --git a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
index e74c8b68..a6596e67 100644
--- a/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
+++ b/rsconcept/frontend/src/features/oss/pages/oss-page/editor-oss-graph/oss-flow.tsx
@@ -232,7 +232,7 @@ export function OssFlow() {
       <SidePanel
         className={clsx(
           'absolute right-0 top-0 z-sticky w-84 min-h-80',
-          'cc-animate-panel cc-shadow-border',
+          'cc-animate-panel cc-shadow-left',
           showPanel ? 'translate-x-0' : 'opacity-0 translate-x-full pointer-events-none'
         )}
         isMounted={showPanel}
diff --git a/rsconcept/frontend/src/styling/utilities.css b/rsconcept/frontend/src/styling/utilities.css
index 7805bb9b..80936370 100644
--- a/rsconcept/frontend/src/styling/utilities.css
+++ b/rsconcept/frontend/src/styling/utilities.css
@@ -197,6 +197,10 @@
   mask-composite: intersect;
 }
 
+@utility cc-shadow-left {
+  box-shadow: 0 0 5px 0 var(--color-border);
+}
+
 @utility duration-select {
   --tw-duration: var(--duration-select);
   transition-duration: var(--duration-select);