.photo-stack {
  position: relative; 
  z-index: 10; 
  margin-bottom: 20px; 
  display: inline-block;
}
 
.photo-stack img {
	background: #fff;
  -moz-box-sizing: content-box; 
  -webkit-box-sizing: content-box; 
  box-sizing: content-box;
	padding: 10px;
	width: 100%;
  -moz-box-shadow:    1px 1px 2px rgba(0,0,0,.25);
  -webkit-box-shadow: 1px 1px 2px rgba(0,0,0,.25);
  box-shadow:         1px 1px 2px rgba(0,0,0,.25);
}

.photo-stack:before { 
	background: #f3f3f3;
	content: ""; 
	width: 100%; 
	height: 100%; 
	position: absolute; 
	left: 0;
  top: 0; z-index: -10;
  -webkit-transform: rotate(-2deg);
  -moz-transform: rotate(-2deg);
  -ms-transform: rotate(-2deg);
  -o-transform: rotate(-2deg);
  -moz-box-shadow:    1px 1px 2px rgba(0,0,0,.25);
  -webkit-box-shadow: 1px 1px 2px rgba(0,0,0,.25);
  box-shadow:         1px 1px 2px rgba(0,0,0,.25);
}