<style>
  /* Pure CSS3 Multi Level Drop Down Navigation Menu */
/* By hakerboy */

#nav {
  float: left;
  font: bold 12px Arial, Helvetica, Sans-serif;
  border: 1px solid #121314;
  border-top: 1px solid #2b2e30;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  overflow: hidden;
}

#nav ul {
  margin:0;
  padding:0;
  list-style:none;
}

#nav ul li {
  float:left;
}

#nav ul li a {
  float: left;
  color:#d4d4d4;
  padding: 10px 20px;
  text-decoration:none;
  background:#3C4042;
  background: -webkit-gradient( linear, left bottom, left top, color-stop(0.09, rgb(59,63,65)), color-stop(0.55, rgb(72,76,77)), color-stop(0.78, rgb(75,77,77)) );
  background: -moz-linear-gradient( center bottom, rgb(59,63,65) 9%, rgb(72,76,77) 55%, rgb(75,77,77) 78% );
  background: -o-linear-gradient( center bottom, rgb(59,63,65) 9%, rgb(72,76,77) 55%, rgb(75,77,77) 78% );
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.1) inset, 0 0 5px rgba(0, 0, 0, 0.1) inset;
  border-left: 1px solid rgba(255, 255, 255, 0.05);
  border-right: 1px solid rgba(0,0,0,0.2);
  text-shadow: 0 -1px 1px rgba(0, 0, 0, 0.6);
}

#nav ul li a:hover,
#nav ul li:hover > a {
  color: #252525;
  background:#3C4042;
  background: -webkit-gradient( linear, left bottom, left top, color-stop(0.09, rgb(77,79,79)), color-stop(0.55, rgb(67,70,71)), color-stop(0.78, rgb(69,70,71)) );
  background: -moz-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );
  background: -o-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.2), 0 -1px #000;

}

#nav li ul a:hover,  
#nav ul li li:hover > a {
  color: #2c2c2c;
  background: #5C9ACD;
  background: -webkit-gradient( linear, left bottom, left top, color-stop(0.17, rgb(61,111,177)), color-stop(0.51, rgb(80,136,199)), color-stop(1, rgb(92,154,205)) );
  background: -moz-linear-gradient( center bottom, rgb(61,111,177) 17%, rgb(80,136,199) 51%, rgb(92,154,205) 100% );
  background: -o-linear-gradient( center bottom, rgb(61,111,177) 17%, rgb(80,136,199) 51%, rgb(92,154,205) 100% );
  border-bottom: 1px solid rgba(0,0,0,0.6);
  border-top: 1px solid #7BAED9;
  text-shadow: 0 1px rgba(255, 255, 255, 0.3);
}

#nav li ul {
  background:#3C4042;
  background-image: -webkit-gradient( linear, left bottom, left top, color-stop(0.09, rgb(77,79,79)), color-stop(0.55, rgb(67,70,71)), color-stop(0.78, rgb(69,70,71)) );
  background-image: -moz-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );
  background-image: -o-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );
  border-radius: 0 0 10px 10px;
  -moz-border-radius: 0 0 10px 10px;
  -webkit-border-radius: 0 0 10px 10px;
  left: -999em;
  margin: 35px 0 0;
  position: absolute;
  width: 160px;
  z-index: 9999;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.4) inset;  
  -moz-box-shadow: 0 0 15px rgba(0, 0, 0, 0.4) inset;  
  -webkit-box-shadow: 0 0 15px rgba(0, 0, 0, 0.4) inset;  
  border: 1px solid rgba(0, 0, 0, 0.5);
}

#nav li:hover ul {
  left: auto;
}

#nav li ul a {
  background: none;
  border: 0 none;
  margin-right: 0;
  width: 120px;
  box-shadow: none;
  -moz-box-shadow: none;
  -webkit-box-shadow: none;
  border-bottom: 1px solid transparent;
  border-top: 1px solid transparent;
}

#nav li li ul {
  margin: -1px 0 0 160px;
  -webkit-border-radius: 0 10px 10px 10px;
  -moz-border-radius: 0 10px 10px 10px;
  border-radius: 0 10px 10px 10px;
  visibility:hidden;
}

#nav li li:hover ul {
  visibility:visible;
}

#nav ul ul li:last-child > a {
  -moz-border-radius:0 0 10px 10px;
  -webkit-border-radius:0 0 10px 10px;
  border-radius:0 0 10px 10px;
}

#nav ul ul ul li:first-child > a {
  -moz-border-radius:0 10px 0 0;
  -webkit-border-radius:0 10px 0 0;
  border-radius:0 10px 0 0;
}

</style>

<!-- Pure CSS3 Multi Level Drop Down Navigation Menu by Bloggermint.com -->

<div id="nav">
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">About Us</a></li>

<li><a href="#">Our Portfolio</a></li>
<li><a href="#">One Dropdown</a>
  <ul>
  <li><a href="#">Level 2.1</a></li>
  <li><a href="#">Level 2.2</a></li>
  <li><a href="#">Level 2.3</a></li>
  <li><a href="#">Level 2.4</a></li>

  <li><a href="#">Level 2.5</a></li>
  </ul>
</li>
<li><a href="#">Three Levels</a>
  <ul>
  <li><a href="#">Level 2.1</a></li>
  <li><a href="#">Level 2.2</a></li>
  <li><a href="#">Level 2.3</a>

  <ul>
  <li><a href="#">Level 2.3.1</a></li>
  <li><a href="#">Level 2.3.2</a></li>
  <li><a href="#">Level 2.3.3</a></li>
  <li><a href="#">Level 2.3.4</a></li>
  <li><a href="#">Level 2.3.5</a></li>

  <li><a href="#">Level 2.3.6</a></li>
  <li><a href="#">Level 2.3.7</a></li>
  </ul>
  </li>
  <li><a href="#">Level 2.4</a></li>
  <li><a href="#">Level 2.5</a></li>
  </ul>

</li>
<li><a href="#">Services</a></li>
<li><a href="#">Contact Us</a></li>
</ul>
</div>

<!-- Pure CSS3 Multi Level Drop Down Navigation Menu by hakerboy-->