nav.php

<ul class="navbar-nav bg-gradient-primary sidebar sidebar-dark accordion" id="accordionSidebar">

    <!-- Sidebar - Brand -->
    <a class="sidebar-brand d-flex align-items-center justify-content-center" href="index.php">
        <div class="sidebar-brand-icon rotate-n-15">
            <i class="fas fa-location-arrow"></i>
        </div>
        <div class="sidebar-brand-text mx-3">Embedded System<sup>WEB</sup></div>
    </a>

    <!-- Divider -->
    <hr class="sidebar-divider my-0">

    <!-- Nav Item - Dashboard -->
    <li class="nav-item active">
        <a class="nav-link" href="index.php">
            <i class="fas fa-fw fa-tachometer-alt"></i>
            <span>Dashboard</span></a>
    </li>

    <!-- Divider -->
    <hr class="sidebar-divider">

    <!-- Heading
    <div class="sidebar-heading">
        Manage
    </div> -->

    <!-- Nav Item - Tables -->
    <!-- <li class="nav-item">
        <a class="nav-link" href="user.php">
            <i class="fas fa-fw fa-table"></i>
            <span>Humidity</span></a>
    </li> -->

    <!-- Nav Item - Tables -->
    <!-- <li class="nav-item">
        <a class="nav-link" href="owner.php">
            <i class="fas fa-fw fa-table"></i>
            <span>Temperature</span></a>
    </li> -->

    <!-- Nav Item - Tables
    <li class="nav-item">
        <a class="nav-link" href="booking.php">
            <i class="fas fa-fw fa-table"></i>
            <span>Bookings</span></a>
    </li> -->

    <!-- Nav Item - Tables
    <li class="nav-item">
        <a class="nav-link" href="parkinglots.php">
            <i class="fas fa-fw fa-table"></i>
            <span>Parking Lots</span></a>
    </li> -->


    <!-- Divider -->
    <!-- <hr class="sidebar-divider d-none d-md-block"> -->

    <!-- Sidebar Toggler (Sidebar) -->
    <div class="text-center d-none d-md-inline">
        <button class="rounded-circle border-0" id="sidebarToggle"></button>
    </div>

    <!-- Sidebar Message -->
    <div class="sidebar-card d-none d-lg-flex">
        <img class="sidebar-card-illustration mb-2" src="img/undraw_rocket.svg" alt="...">
        <p class="text-center mb-2"><strong>Embedded System</strong> allows you to monitor the air around you!</p>
        <a class="btn btn-success btn-sm" href="https://startbootstrap.com/theme/sb-admin-pro">Download Air Monitoring</a>
    </div>

</ul>