<button class=“bsk-navbar-toggle bsk-collapsed” type=“button” data-toggle=“collapse” data-target=“#navbar-collapse” aria-expanded=“false”>

<span class="bsk-sr-only">Toggle navigation</span>
<span class="bsk-icon-bar"></span>
<span class="bsk-icon-bar"></span>
<span class="bsk-icon-bar"></span>

</button>