JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<div class="row">
 
                                <div class="col-md-3">
 
                                <div class="titulo">
 
 
 
 
 
                                                                <span class="glyphicon glyphicon-plus" id=""></span>
                                                          <ul class="dropdown-menu">
                                                            <li><a href="#">Agregar etiqueta</a></li>
                                                            <li><a href="#">Agregar separador</a></li>
                                                          </ul>
 
 
                                </div>
 
                            </div>
 
                        <div class="col-md-9">
 
                                        <ul class="nav nav-tabs">
                                                        <li class="active"><a aria-expanded="true" href="#view1" data-toggle="tab"><span class="glyphicon glyphicon-th-large"></span></a></li>
                                                        <li class=""><a aria-expanded="false" href="#view2" data-toggle="tab"><span class="glyphicon glyphicon-th-list"></span></a></li>
                                                </ul>
 
                                        <div id="myTabContent" class="tab-content">
 
 
                                                <div class="dropdown">
                                                    <span id="willtoggle" class=" glyphicon glyphicon-align-left"></span>
                                                  <ul id="toggled" class="dropdown-menu" aria-labelledby="dropdownMenu1">
                                                   ...

CSS

.button{
    padding:10px;
}
#willtoggle:hover,#willtoggletoo:hover{cursor:pointer;}/* Thanks to loli */
.hidden{
    display:none;
}

JavaScript

$('#willtoggle').on('click', function (event) {
    $("#toggled").toggle();
});
$(document).on('click', function(event) {
  if ($(event.target).closest('.dropdown').length === 0) {
      $("#toggled").hide();
  }
});