Use this style to create text shadow on css3:

#shaddow {
font-family: sans-serif;
font-size: 90px;
font-weight: bold;
color: #FFF;
position:absolute;
left: 296px;
text-align: center;
top: 259px;
width: 669px;
height: 136px;
}

Preview below:

CSS3 Text Shaddow