<nav class="navbar navbar-icon-top navbar-expand-lg navbar-dark bg-dark">
        <a class="navbar-brand" href="#">Navbar</a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-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 mr-auto">
                <li class="nav-item active">
                    <a class="nav-link" href="#">
                        <i class="fa fa-home"></i>
                        Home
                        <span class="sr-only">(current)</span>
                    </a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">
                        <i class="fa fa-envelope-o">
                            <span class="badge badge-danger">11</span>
                        </i>
                        Messages
                    </a>
                </li>
                <li class="nav-item">
                    <a class="nav-link disabled" href="#">
                        <i class="fa fa-envelope-o">
                            <span class="badge badge-danger">11</span>
                        </i>
                        Disabled
                    </a>
                </li>
            </ul>
            <form class="form-inline my-2 my-lg-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>
    </nav>