nav.php

<nav class="navbar bg-body-tertiary px-3">
    <a class="navbar-brand" href="./">
        <img src="./assets/img/logo.png" alt="HackFest" width="auto" height="60">
    </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" href="./#section1">Home</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="./#section2">About</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="./#section3">Schedule</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="./#contact">Contact</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="./uploadPaperForm.php">Upload Abstract</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="./paymentScreenshot.php">Payment Proof</a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="./register.php">Register</a>
            </li>
        </ul>
    </div>
</nav>