Активная вкладка на PHP

<nav>
   <style>
      #active{
        color:#FFC801;
      }
   </style>
   <?php
      $activePage = basename($_SERVER['PHP_SELF'], ".php");
      ?>
   <ul>
      <li><a href="about.php" id="<?= ($activePage == 'about') ? 'active':''; ?>">About Us</a></li>
      <li><a href="mentors.php" id="<?= ($activePage == 'mentors') ? 'active':''; ?>">Mentors</a></li>
      <li><a href="tours.php" id="<?= ($activePage == 'tours') ? 'active':''; ?>">Tours</a></li>
      <li><a href="animation.php" id="<?= ($activePage == 'animation') ? 'active':''; ?>">Animation</a></li>
      <li><a href="blogs.php" id="<?= ($activePage == 'blogs') ? 'active':''; ?>">Blog</a></li>
      <li><a href="testimonials.php" id="<?= ($activePage == 'testimonials') ? 'active':''; ?>">Testimonials</a></li>
      <li><a href="press_media.php" id="<?= ($activePage == 'press_media') ? 'active':''; ?>">Press/Media</a></li>
      <li><a href="facts.php" id="<?= ($activePage == 'facts') ? 'active':''; ?>">Facts</a></li>
   </ul>
</nav>