Starter template

Its very important to follow the structure provided below.

<!doctype html>
<html lang="en">
<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Material Icons -->
    <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
    <!-- Material Style CSS -->
    <link rel="stylesheet"
          href="https://cdn.jsdelivr.net/npm/@materialstyle/materialstyle@2.0.2/dist/css/materialstyle.min.css"
          integrity="sha384-ID8Bfacxr/FY4eCa65p/DFnZ38na2xky4QFhDhK9yLyVirD1gaze6wH6Ciw5bC5D"
          crossorigin="anonymous">

    <title>Material Style</title>
</head>
<body>
    <!-- Navbar -->
    <nav class="navbar navbar-expand-sm bg-blue navbar-dark fixed-top auto-hide">
        <a class="navbar-brand" href="javascript:">
            Brand
        </a>
    </nav>

    <!-- Root -->
    <section class="m-root">

        <!-- Container -->
        <div class="m-container">

            YOUR CONTENT

        </div>
    </section>

    <!-- Footer -->
    <footer class="bg-dark text-white">
        Footer
    </footer>

    <!-- jQuery -->
    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0="
            crossorigin="anonymous"></script>
    <!-- Popper JS -->
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"
            integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo"
            crossorigin="anonymous"></script>

    <!-- Material Style JS -->
    <script src="https://cdn.jsdelivr.net/npm/@materialstyle/materialstyle@2.0.2/dist/js/materialstyle.min.js"
            integrity="sha384-mE1gmtmt8Lck7Mas/CY9zBWhsJoM6jjcbN8IWct3IUqBgepHr1+YPr5ZuSAKL0Fu"
            crossorigin="anonymous"></script>
</body>
</html>
<!doctype html>
<html lang="en">
<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Material Icons -->
    <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
    <!-- Material Style CSS -->
    <link rel="stylesheet"
          href="https://cdn.jsdelivr.net/npm/@materialstyle/materialstyle@2.0.2/dist/css/materialstyle.min.css"
          integrity="sha384-ID8Bfacxr/FY4eCa65p/DFnZ38na2xky4QFhDhK9yLyVirD1gaze6wH6Ciw5bC5D"
          crossorigin="anonymous">

    <title>Material Style</title>
</head>
<body>
    <!-- Navbar -->
    <nav class="navbar navbar-expand-sm bg-blue navbar-dark fixed-top auto-hide">
        <a class="navbar-brand" href="javascript:">
            Brand
        </a>
    </nav>

    <!-- Root -->
    <section class="m-root">

        <!-- Drawer -->
        <aside class="drawer bg-light raised-4dp">
            <div class="drawer-header bg-dark text-light">
                <a class="drawer-brand text-light" href="javascript:">
                    Brand
                </a>
                <i class="drawer-close-btn material-icons">&#xE5CD;</i>
            </div>
            <ul class="nav flex-column">
                <li class="nav-item">
                    <a class="nav-link text-dark" href="javascript:">
                        Link
                    </a>
                </li>
                <li class="nav-item">
                    <a class="nav-link text-dark" href="javascript:">
                        Link
                    </a>
                </li>

                <li class="nav-item">
                    <a class="nav-link text-dark sub-menu-link" href="javascript:">
                        Menu A <i class="material-icons">keyboard_arrow_down</i>
                    </a>
                </li>
                <li class="nav-item sub-menu-container">
                    <ul class=" nav flex-column sub-menu" data-ic-class="sub-menu">
                        <li class="nav-item">
                            <a class="nav-link text-dark" href="javascript:">
                                Menu Item
                            </a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link text-dark" href="javascript:">
                                Menu Item
                            </a>
                        </li>
                    </ul>
                </li>
            </ul>
        </aside>

        <!-- Container -->
        <div class="m-container">

            YOUR CONTENT

        </div>
    </section>

    <!-- Footer -->
    <footer class="bg-dark text-white">
        Footer
    </footer>

    <!-- jQuery -->
    <script src="https://code.jquery.com/jquery-3.5.1.min.js"
            integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0="
            crossorigin="anonymous"></script>
    <!-- Popper JS -->
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"
            integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo"
            crossorigin="anonymous"></script>

    <!-- Material Style JS -->
    <script src="https://cdn.jsdelivr.net/npm/@materialstyle/materialstyle@2.0.2/dist/js/materialstyle.min.js"
            integrity="sha384-mE1gmtmt8Lck7Mas/CY9zBWhsJoM6jjcbN8IWct3IUqBgepHr1+YPr5ZuSAKL0Fu"
            crossorigin="anonymous"></script>
</body>
</html>