box-shadow: 5px 5px;

box-shadow: 5px 5px 3px 1px #999;

box-shadow: 5px 5px 3px 1px rgba(0,0,0,.4);

box-shadow: 0 0 10px 0 rgba(0,0,0,.4);

box-shadow: inset 0 0 10px 0 rgba(0,0,0,.4);