CSS3 Box Shadow - Top Only

HTML

<div id="box">CSS3 Box Shadow - Top Only</div>

CSS

#box {
    background: #CCC;
    -webkit-box-shadow: inset 0 20px 20px -20px rgba(0,0,0,0.8);
    -moz-box-shadow: inset 0 20px 20px -20px rgba(0,0,0,0.8);
    box-shadow: inset 0 20px 20px -20px rgba(0,0,0,0.8);
    font: bold 18px/1.2em sans-serif;
    height: 100px;
    margin: 15px auto;
    padding: 75px 15px 25px;
    text-align: center;
    width: 200px;
}