fix: 【bcwin 网站】轮播图优化

src/components/Box/RedPacketModal.tsx

@@ -476,7 +476,7 @@ const RedPacketModal = forwardRef<RedPacketModalProps, Props>(function RedPacket
         }
     };
     return (
-        <Mask visible={visible} destroyOnClose={true} getContainer={null}>
+        <Mask visible={visible} destroyOnClose={true} getContainer={document.getElementById("app")}>
             <FallAnimation onClose={() => setVisible(false)} />
 
             {status === Status.is_start ? (