Fixed sidebar alongside a centered Bootstrap 3 grid

Minimal code to have a fixed sidebar outside a Bootstrap 3 grid.

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<div id="wrapper">
  <div id="sidebar-wrapper">
    <ul class="sidebar-nav">
      <li class="sidebar-brand"><a href="#">Home</a></li>
      <li><a href="#">Another link</a></li>
      <li><a href="#">Next link</a></li>
      <li><a href="#">Last link</a></li>
    </ul>
  </div>
  <div id="page-content-wrapper">
    <div class="page-content">
      <div class="container">
        <div class="row">
          <div class="col-md-12">
            <p>
              Content of page.
            </p>
            <p>
              Menu will appear collapsed on smaller screens &ndash; resize me!
            </p>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>

CSS

#wrapper {
  padding-left: 250px;
  transition: all 0.4s ease 0s;
}

#sidebar-wrapper {
  margin-left: -250px;
  left: 250px;
  width: 250px;
  background: #CCCCCC;
  position: fixed;
  height: 100%;
  overflow-y: auto;
  z-index: 1000;
  transition: all 0.4s ease 0s;
}

#page-content-wrapper {
  width: 100%;
}

.sidebar-nav {
  position: absolute;
  top: 0;
  width: 250px;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (max-width:767px) {
  #wrapper {
    padding-left: 0;
  }
  #sidebar-wrapper {
    left: 0;
  }
  #wrapper.active {
    position: relative;
    left: 250px;
  }
  #wrapper.active #sidebar-wrapper {
    left: 250px;
    width: 250px;
    transition: all 0.4s ease 0s;
  }
}

JavaScript

// using Bootstrap CDN libraries

// http://stackoverflow.com/questions/20557912/creating-a-fixed-sidebar-alongside-a-centered-bootstrap-3-grid