JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<div class="flLeft similarHeight">
  <ul class="nav metismenu" id="side-menu">
    <li class="nav-header">
      <div class="logo"><a href="index.html">Brand Name</a></div>
    </li>
  </ul>
</div>
<div class="flLeftsmall">
  <ul class="nav smallnavigation">
    <li class="nav-header">
    <div class="logo"><a href="index.html">Brand</a></div>
    </li>
  </ul>
</div>
<div class="pull-left">
  <span><i class="glyphicon glyphicon-triangle-left menu-big"></i></span>
</div>

CSS

.flLeft {
  background:#1b3b5e;
  z-index: 1001;
  width: 220px;
  height: 200px;
  }
.flLeftsmall {
  display: none;
  background:#1b3b5e;
  width: 80px;
  height: 200px;
  color: #fff;
  }
  a{color: #fff;}

JavaScript

$(document).ready(function () {
    $('.menu-big').click(function () {
        $(this).toggleClass('glyphicon-triangle-right glyphicon-triangle-left');
        $('.flLeft').toggle('slide');
        $('.flLeftsmall').toggle('slide');
    });
});