Pure CSS3 box-shadow page curl effect

<ul class="box">
  <li></li>
  <li></li>
  <li></li>
  <li></li>
  <li></li>
  <li></li>
</ul>

ul.box {
margin: 0;
padding: 0; }

ul.box li {
list-style-type: none;
margin: 0 30px 30px 0;
padding: 0;
width: 250px;
height: 150px;
border: 1px solid #efefef;
position: relative;
float: left;
background: #ffffff; /* old browsers */
background: -moz-linear-gradient(top, #ffffff 0%, #e5e5e5 100%); /* firefox */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ffffff), color-stop(100%,#e5e5e5)); /* webkit */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#e5e5e5',GradientType=0 ); /* ie */
-webkit-box-shadow: 0px 0px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0px 0px 3px rgba(0, 0, 0, 0.3); }

ul.box li:after {
z-index: -1;
position: absolute;
background: transparent;
width: 70%;
height: 55%;
content: '';
right: 10px;
bottom: 10px;
-webkit-transform: skew(15deg) rotate(5deg);
-webkit-box-shadow: 8px 12px 10px rgba(0, 0, 0, 0.3);
-moz-transform: skew(15deg) rotate(5deg);
-moz-box-shadow: 8px 12px 10px rgba(0, 0, 0, 0.3); }

ul.box li:before {
z-index: -2;
position: absolute;
background: transparent;
width: 70%;
height: 55%;
content: '';
left: 10px;
bottom: 10px;
-webkit-transform: skew(-15deg) rotate(-5deg);
-webkit-box-shadow: -8px 12px 10px rgba(0, 0, 0, 0.3);
-moz-transform: skew(-15deg) rotate(-5deg);
-moz-box-shadow: -8px 12px 10px rgba(0, 0, 0, 0.3); }

Handcoded in Coda with love by Matt Hamm www.matthamm.com
thanks to www.ballyhooblog.com for the inspiration.