preparando para dar merge

vir/src/App.js

 import './App.css';
 import React from 'react';
 import Header from './components/bookshelf/bookshelf';
-import BookReader from './components/reader/bookreader';
-import Navbar from './components/footer-component/footer';
-import WithLabelExample from './components/progress-bar/progress';
 
 
 
 function App() {
   return (
     <div className="App">
-     
+      <Header />  
       <main>
-         
-        <WithLabelExample />
-          <Navbar></Navbar>
-
-          
+        
       </main>
     </div>
   );
-
-
-
-  
 }
 
-export default App;
\ No newline at end of file
+export default App;