diff --git a/client/src/components/Mockup.tsx b/client/src/components/Mockup.tsx
index 3afde9d..d27f363 100644
--- a/client/src/components/Mockup.tsx
+++ b/client/src/components/Mockup.tsx
@@ -106,7 +106,7 @@ export function QueryBar() {
 
 function MockupBody() {
     return <>
-        <AppBar position="static">
+        <AppBar position="static" style={{background: 'grey'}}>
             <Box m={0.5} display="flex" alignItems="center">
                 <img height="30px" src={process.env.PUBLIC_URL + "/logo.svg"}></img>
             </Box>