<nav class="navbar navbar-expand-md navbar-dark bg-dark">
<div class="navbar-collapse collapse w-100 order-1 order-md-0 dual-collapse2">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Left</a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
<div class="mx-auto order-0">
<a class="navbar-brand mx-auto" href="#">Navbar 2</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".dual-collapse2">
<span class="navbar-toggler-icon"></span>
</button>
</div>
<div class="navbar-collapse collapse w-100 order-3 dual-collapse2">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#">Right</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</nav>