update

src/App.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import { hot } from 'react-hot-loader/root';
-import { Layout } from 'antd';
+import { Layout, Menu } from 'antd';
 import { GithubProvider } from './contexts/Github';
 import { EncryptionProvider } from './contexts/Encryption';
 import { DecryptionProvider } from './contexts/Decryption';
@@ -11,6 +11,8 @@ const App: React.FC = () => (
     <EncryptionProvider>
       <DecryptionProvider>
         <Layout style={{minHeight:"100vh"}}>
+          <Layout.Header>
+          </Layout.Header>
           <Layout.Content style={{ padding: '25px', maxWidth: '800px', width: '100%', margin: 'auto' }}>
             <AppRouter/>
           </Layout.Content>