Pure CSS3 Lavalamp Menu

CSS

*{
    margin:0;
    padding:0;
}
body {
    font:14px/1.3 Arial,sans-serif;
    background-color:#212121;
}
header {
    background-color:#212121;
    box-shadow: 0 -1px 2px #111111;
    color:#fff;
    display:block;
    height:40px;
    position:relative;
    width:100%;
    z-index:100;
}
header h2{
    font-size:22px;
    font-weight:normal;
    left:50%;
    margin-left:-400px;
    padding:22px 0;
    position:absolute;
    width:540px;
}
header a.stuts,a.stuts:visited{
    border:none;
    text-decoration:none;
    color:#fcfcfc;
    font-size:14px;
    left:50%;
    line-height:31px;
    margin:0 0 0 110px;
    position:absolute;
    top:0;
}
header .stuts span {
    font-size:22px;
    font-weight:bold;
    margin-left:5px;
}
.container {
    height: 571px;
    margin: 30px auto;
    width: 957px;
}

#nav,#nav ul {
    list-style: none outside none;
    margin: 0;
    padding: 0;
}
#nav {
    background: url(http://bit.ly/14Chqrv) no-repeat scroll 0 0 transparent;
    clear: both;
    font-size: 12px;
    height: 58px;
    padding: 0 0 0 9px;
    position: relative;
    width: 957px;
}
#nav ul {
    background-color: #222;
    border:1px solid #222;
    border-radius: 0 5px 5px 5px;
    border-width: 0 1px 1px;
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0.5);
    left: -9999px;
    overflow: hidden;
    position: absolute;
    top: -9999px;
    z-index: 2;

    transform: scaleY(0);
}
#nav li {
    background: url('http://bit.ly/178rdD6') no-repeat scroll right 5px transparent;
    float: left;
    position: relative;
}
#nav li a {
    color: #FFFFFF;
    display: block;
    float: left;
    font-weight: normal;
    height: 30px;
    padding: 23px 20px 0;
    position: relative;
    text-decoration: none;
    text-shadow: 1px 1px 1px #000000;
}
#nav li:hover > a {
    color: #00B4FF;
}
#nav li:hover, #nav a:focus, #nav a:hover, #nav a:active {
    background: none repeat scroll 0 0 #121212;
    outline: 0 none;
}
#nav li:hover ul.subs {
    left: 0;
    top: 53px;
    width: 180px;

    transform: scaleY(1);
}
#nav ul li {
    background: none;
    width: 100%;
}
#nav ul li a {
    float: none;
}
#nav ul li:hover > a {
    background-color: #121212;
    color: #00B4FF;
}
#lavalamp {
    background: url('http://bit.ly/17LIFi4') no-repeat scroll 0 0 transparent;
    height: 16px;
    left: 13px;
    position: absolute;
    top: 0px;
    width: 64px;

    transition: all 300ms ease;
}
#lavalamp:hover {
    transition-duration: 3000s;
}

#nav li:nth-of-type(1):hover ~ #lavalamp {
    left: 13px;
}
#nav li:nth-of-type(2):hover ~ #lavalamp {
    left: 90px;
}
#nav li:nth-of-type(3):hover ~ #lavalamp {
    left: 170px;
}
#nav li:nth-of-type(4):hover ~ #lavalamp {
    left: 250px;
}
#nav li:nth-of-type(5):hover ~ #lavalamp {
    left: 330px;
}
#nav li:nth-of-type(6):hover ~ #lavalamp {
    left: 410px;
}
#nav li:nth-of-type(7):hover ~ #lavalamp {
    left: 490px;
}
#nav li:nth-of-type(8):hover ~ #lavalamp {
    left: 565px;
}

HTML

<header>
  <h2>Pure CSS3 LavaLamp Menu</h2>
</header>

<div class="container">
  <ul id="nav">
    <li><a href="#">Home</a></li>
    <li><a class="hsubs" href="#">Menu 1</a>
      <ul class="subs">
        <li><a href="#">Item 1</a></li>
        <li><a href="#">Item 2</a></li>
      </ul>
    </li>
    <li><a class="hsubs" href="#">Menu 2</a>
      <ul class="subs">
        <li><a href="#">Item 1</a></li>
        <li><a href="#">Item 2</a></li>
      </ul>
    </li>
    <li><a class="hsubs" href="#">Menu 3</a>
      <ul class="subs">
        <li><a href="#">Item 1</a></li>
        <li><a href="#">Item 2</a></li>
      </ul>
    </li>
    <li><a href="#">Menu 4</a></li>
    <li><a href="#">Menu 5</a></li>
    <li><a href="#">Menu 6</a></li>
    <li><a href="#">Back</a></li>
    <div id="lavalamp"></div>
  </ul>
</div>