ArduinoSensorServer/templates/base.html

<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
{% load static %}
<link rel="stylesheet" href="{% static "css/base.css" %}">
<!------ Include the above in your HEAD tag ---------->

<div class="navbar navbar-expand-md navbar-dark bg-dark mb-4" role="navigation">
    <a class="navbar-brand" href="#">Bootstrap 4 NavBar</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse"
            aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarCollapse">
        <ul class="navbar-nav mr-auto">
            <li class="nav-item active">
                <a class="nav-link" href="{% url 'home'%}">Home <span class="sr-only">(current)</span></a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="https://github.com/Kaabp/"
                   target="_blank">Github</a>
            </li>
            <li class="nav-item">
                <a class="nav-link disabled" href="#">Disabled</a>
            </li>
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" id="dropdown1" data-toggle="dropdown" aria-haspopup="true"
                   aria-expanded="false">Dropdown1</a>
                <ul class="dropdown-menu" aria-labelledby="dropdown1">
                    <li class="dropdown-item" href="#"><a>Action 1</a></li>
                    <li class="dropdown-item dropdown">
                        <a class="dropdown-toggle" id="dropdown1-1" data-toggle="dropdown" aria-haspopup="true"
                           aria-expanded="false">Dropdown1.1</a>
                        <ul class="dropdown-menu" aria-labelledby="dropdown1-1">
                            <li class="dropdown-item" href="#"><a>Action 1.1</a></li>
                            <li class="dropdown-item dropdown">
                                <a class="dropdown-toggle" id="dropdown1-1-1" data-toggle="dropdown"
                                   aria-haspopup="true" aria-expanded="false">Dropdown1.1.1</a>
                                <ul class="dropdown-menu" aria-labelledby="dropdown1-1-1">
                                    <li class="dropdown-item" href="#"><a>Action 1.1.1</a></li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" id="dropdown2" data-toggle="dropdown" aria-haspopup="true"
                   aria-expanded="false">Dropdown2</a>
                <ul class="dropdown-menu" aria-labelledby="dropdown2">
                    <li class="dropdown-item" href="#"><a>Action 2 A</a></li>
                    <li class="dropdown-item" href="#"><a>Action 2 B</a></li>
                    <li class="dropdown-item" href="#"><a>Action 2 C</a></li>
                    <li class="dropdown-item dropdown">
                        <a class="dropdown-toggle" id="dropdown2-1" data-toggle="dropdown" aria-haspopup="true"
                           aria-expanded="false">Dropdown2.1</a>
                        <ul class="dropdown-menu" aria-labelledby="dropdown2-1">
                            <li class="dropdown-item" href="#"><a>Action 2.1 A</a></li>
                            <li class="dropdown-item" href="#"><a>Action 2.1 B</a></li>
                            <li class="dropdown-item" href="#"><a>Action 2.1 C</a></li>
                            <li class="dropdown-item dropdown">
                                <a class="dropdown-toggle" id="dropdown2-1-1" data-toggle="dropdown"
                                   aria-haspopup="true" aria-expanded="false">Dropdown2.1.1</a>
                                <ul class="dropdown-menu" aria-labelledby="dropdown2-1-1">
                                    <li class="dropdown-item" href="#"><a>Action 2.1.1 A</a></li>
                                    <li class="dropdown-item" href="#"><a>Action 2.1.1 B</a></li>
                                    <li class="dropdown-item" href="#"><a>Action 2.1.1 C</a></li>
                                </ul>
                            </li>
                            <li class="dropdown-item dropdown">
                                <a class="dropdown-toggle" id="dropdown2-1-2" data-toggle="dropdown"
                                   aria-haspopup="true" aria-expanded="false">Dropdown2.1.2</a>
                                <ul class="dropdown-menu" aria-labelledby="dropdown2-1-2">
                                    <li class="dropdown-item" href="#"><a>Action 2.1.2 A</a></li>
                                    <li class="dropdown-item" href="#"><a>Action 2.1.2 B</a></li>
                                    <li class="dropdown-item" href="#"><a>Action 2.1.2 C</a></li>
                                </ul>
                            </li>
                        </ul>
                    </li>
                </ul>
            </li>
        </ul>
        <form class="form-inline mt-2 mt-md-0">
            <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
            <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
        </form>
    </div>
</div>
<body class="bg">
<main role="main" class="container">
    <div>
        {% block content %} {% endblock %}
    </div>
</main>
</body>