.drop-shadow {
  -webkit-box-shadow: rgba(0, 0, 0, 0.4) 10px 10px 10px; 
  -moz-box-shadow: rgba(0, 0, 0, 0.4) 10px 10px 10px;
  filter: 
    progid:DXImageTransform.Microsoft.Shadow(color=#dddddd,direction=0,strength=7)
    progid:DXImageTransform.Microsoft.Shadow(color=#cccccc,direction=90,strength=10)
    progid:DXImageTransform.Microsoft.Shadow(color=#cccccc,direction=180,strength=10)
    progid:DXImageTransform.Microsoft.Shadow(color=#dddddd,direction=270,strength=7);
}