JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<div class="container">
    <nav class="navbar navbar-default">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#categories" aria-expanded="true">	<span class="sr-only">Раскрыть категории</span>
 <span>Categories <span class="glyphicon glyphicon-plus-sign"></span></span>
            </button>
        </div>
        <div class="navbar-collapse collapse in" id="categories" aria-expanded="true">
            <ul class="nav navbar-nav">
                <li class=" dropdown">	
                    <a href="/agm_before_update_to_J3/index.php?option=com_virtuemart&amp;view=category&amp;virtuemart_category_id=134" >Leather goods</a><span class="dropdown-toggle glyphicon glyphicon-plus-sign" data-toggle="dropdown" role="button" aria-expanded="false"></span>
                    <ul class="dropdown-menu " role="menu">
                        <li>	<a href="/agm_before_update_to_J3/index.php?option=com_virtuemart&amp;view=category&amp;virtuemart_category_id=136">Goods1</a>	
                        </li>
                        <li>	<a href="/agm_before_update_to_J3/index.php?option=com_virtuemart&amp;view=category&amp;virtuemart_category_id=135">Goods2</a>	
                        </li>
                        <li>	<a href="/agm_before_update_to_J3/index.php?option=com_virtuemart&amp;view=category&amp;virtuemart_category_id=92">Goods3</a>	
                        </li>
                    </ul>
                </li>
                <li class=" ">	<a href="/agm_before_update_to_J3/index.php?option=com_virtuemart&amp;view=category&amp;virtuemart_category_id=2">
							Statuettes 						</a>

                </li>
                
            </ul>
        </div>
    </nav>
</div>

CSS

li.dropdown>span{
    top
}