diff --git a/src/app/OlMap/Controls/BaseLayers.tsx b/src/app/OlMap/Controls/BaseLayers.tsx
index 13692ae..a9fd717 100644
--- a/src/app/OlMap/Controls/BaseLayers.tsx
+++ b/src/app/OlMap/Controls/BaseLayers.tsx
@@ -179,7 +179,7 @@ const BaseLayers: React.FC = () => {
   };
 
   return (
-    <div className="absolute right-17 bottom-8">
+    <div className="absolute right-17 bottom-8 z-99">
       <div
         className="w-20 h-20 bg-white rounded-xl drop-shadow-xl shadow-black"
         onMouseEnter={handleEnter}