Update frontend/src/App.js

frontend/src/App.js

@@ -1,6 +1,6 @@
 import React, { useState, useEffect } from 'react';
 import _ from 'lodash';
-import './App.css';
+import './styles.css';
 
 const ScoreBar = ({ score }) => {
   const percentage = score <= 1 ? score * 100 : score;
@@ -89,7 +89,9 @@ function App() {
                   key={benchmark}
                   onClick={() => handleSort(benchmark)}
                 >
-                  {benchmark} -
+                  {benchmark} - {sortConfig.key === benchmark && (
+                    sortConfig.direction === 'desc' ? '↓' : '↑'
+                  )}
                 </th>
               ))}
             </tr>