<div class="menu">
    <div class="title">MENU</div>
    <ul class="nav">
      <li><a href="#">Home</a></li>
      <li><a href="#">About</a></li>
      <li><a href="#">Work</a></li>
      <li><a href="#">Resources</a></li>
      <li><a href="#">Contact</a></li>
    </ul>
</div>

<div class="intro">
  Hover over the menu.<br> Thanks for visiting.
</div>

@mixin vertical-align($position) {
  position:$position;
  top: 50%;
  -webkit-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  transform: translateY(-50%);
}

@mixin all-transition($time)
{
  transition: all $time;
  -webkit-transition: all $time;
}
body
{
  margin: 0;
  font-family: 'Muli', sans-serif;
}
.menu {

  font-weight: 100;
  background: #efefef;
  width: 150px;
  height: 100%;
  padding-left: 50px;
  position: fixed;
  z-index: 100;
  -webkit-box-shadow: -3px 0px 5px 0px rgba(0,0,0,0.2);
  box-shadow: -3px 0px 5px 0px rgba(0,0,0,0.2);
  right: -130px;
  @include all-transition(0.3s);
  color: #222;

  &:hover, &:focus
  {
    transform: translate3d(-130px, 0, 0);
    animation-timing-function: 1s ease-in;
  }
  .title
  {
    top:50%;
    @include vertical-align(absolute);
    transform: rotate(270deg);
    left: 10px;
    font-weight: 800;
    font-size: 15px;

  }
  .nav
  {
    @include vertical-align(absolute);
    font-weight: 100;

    li
    {
        padding-bottom: 30px;
        list-style-type: none;

        a
        {
          display: block;
          text-decoration: none;
          color: inherit;
          @include all-transition(0.3s);

          &:hover
          {
            color: #aaa;
          }
        }
    }


  }


}
.intro
{
  position: absolute;
  top:30%;
  margin: 0 auto;left:0;right:0;
  font-size: 45px;
  text-align: center;
   font-style: italic;

}

// Hey.