" href="#">Expand at lg</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample05" aria-controls="navbarsExample05" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>

      <div class="collapse navbar-collapse" id="navbarsExample05">
        <ul class="navbar-nav mr-auto">
          <li class="nav-item active">
            <a class="nav-link" href="#">Home <span class="sr-only">(current)<