box-shadow: 0 5px 5px 3px #000;

Giro del elemento
#sombreado_dos:before{ bottom: 10px; box-shadow: 0 5px 5px 3px #000; content:""; left: 6px; position: absolute; -webkit-transform: rotate(-1deg); -moz-transform: rotate(-1deg); -ms-transform: rotate(-1deg); -o-transform: rotate(-1deg); transform: rotate(-1deg); width: 300px; z-index: -1; }

box-shadow: 0 5px 5px 3px #000;

Giro del elemento
#sombreado_dos:after{ bottom: 10px; box-shadow: 0 5px 5px 3px #000; content:""; right: 6px; position: absolute; -webkit-transform: rotate(1deg); -moz-transform: rotate(1deg); -ms-transform: rotate(1deg); -o-transform: rotate(1deg); transform: rotate(1deg); width: 300px; z-index: -1; }

box-shadow: -10px -10px 10px rgba(0, 0, 0, 0.5);

box-shadow:0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;