menu.php

<nav class="navbar navbar-expand-lg  navbar-dark sticky-top bg-info" >
<link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Open+Sans:wght@300&display=swap" rel="stylesheet">

  <div class="container-fluid">
    <a class="navbar-brand" href="#" style="font-family:'Staatliches', cursive;"><b>HelpIt</b></a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav ml-auto mb-2 mb-lg-0">
        <li class="nav-item">
          <a class="nav-link active" aria-current="page" href="index.php">Home</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="about.php">About</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="reason.php">Why donate US</a>
        </li>
        <li class="nav-item dropdown">
          <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            Services
          </a>
          <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
            <li><a class="dropdown-item" href="medical.php">Medical</a></li>
            <li><a class="dropdown-item" href="devel.php">Education</a></li>
            <li><hr class="dropdown-divider"></li>
            <li><a class="dropdown-item" href="active.php">Our Activity</a></li>

          </ul>
        </li>
        
      </ul>
      <form class="d-flex">
        <a class="btn btn-danger" type="submit" href="donation.php">Donate</a>
      </form>
    </div>
  </div>
</nav>