diff --git a/packages/core/src/container/ReactFlow/index.tsx b/packages/core/src/container/ReactFlow/index.tsx
index f540cdf5..cc8c980a 100644
--- a/packages/core/src/container/ReactFlow/index.tsx
+++ b/packages/core/src/container/ReactFlow/index.tsx
@@ -53,8 +53,9 @@ const initDefaultViewport: Viewport = { x: 0, y: 0, zoom: 1 };
 const wrapperStyle: CSSProperties = {
   width: '100%',
   height: '100%',
-  position: 'relative',
   overflow: 'hidden',
+  position: 'relative',
+  zIndex: 0,
 };
 
 const ReactFlow = forwardRef<ReactFlowRefType, ReactFlowProps>(