CSS3 box-shadow Inset bottom only

If you would like put the inner shadow only bottom box. you can use css3 to adjust shadow

HTML

<div class="box"></div>

 CSS

div.box {

    background:red;
    height:100px;
    width:200px;
    -moz-box-shadow: inset 0 -10px 10px -10px #000000;
    -webkit-box-shadow: inset 0 -10px 10px -10px #000000;
    box-shadow: inset 0 -10px 10px -10px #000000;

}