Box Shadow

.redBox{
    background: #F00;
    box-shadow: 10px 10px 7px #0F0;
}
.greenBox{
    background: #0F0;
    box-shadow: 0 5px 6px -2px;
}
.blueBox{
    background: #00F;
    box-shadow: 0 0 18px 6px #FFF inset,
                0 0 18px 6px #000;
}