diff --git a/web/src/App.tsx b/web/src/App.tsx
index f748b3ebd..ff9048156 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -23,7 +23,7 @@ const { Header, Content, Footer } = Layout;
 export const App: React.FC = () => (
   <Router>
     <Layout>
-      <Header>
+      <Header style={{ background: "#000" }}>
         <Logo />
         <Menu mode="horizontal" style={{ lineHeight: "64px" }} />
       </Header>