navbar_admin_panel.php

<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
  <div class="container-fluid">
    <a class="navbar-brand" href="http://localhost/HMS/home.php">U Hospital</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarNavDropdown">
      <ul class="navbar-nav">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="http://localhost/HMS/home.php">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="http://localhost/HMS/admin_panel.php">Admin Panel</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="http://localhost/HMS/logout.php">Log Out</a>
        </li>
      </ul>
    </div>
    
  </div>
</nav>