dropshadow css part from http://nicolasgallagher.com/css-drop-shadows-without-images/demo/

some-dropshadow.css

/* Shared styles */
        
.drop-shadow {
	position:relative;
	float:left;
	width:40%;    
	padding:1em; 
	margin:2em 10px 4em; 
	background:#fff;
	-webkit-box-shadow:0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
	   -moz-box-shadow:0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
			box-shadow:0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
}

.drop-shadow:before,
.drop-shadow:after {
	content:"";
	position:absolute; 
	z-index:-2;
}

/* Lifted corners */

.lifted {
	-moz-border-radius:4px; 
		 border-radius:4px;
}

.lifted:before,
.lifted:after { 
	bottom:15px;
	left:10px;
	width:50%;
	height:20%;
	max-width:300px;
	-webkit-box-shadow:0 15px 10px rgba(0, 0, 0, 0.7);   
	   -moz-box-shadow:0 15px 10px rgba(0, 0, 0, 0.7);
			box-shadow:0 15px 10px rgba(0, 0, 0, 0.7);
	-webkit-transform:rotate(-3deg);    
	   -moz-transform:rotate(-3deg);   
		-ms-transform:rotate(-3deg);   
		 -o-transform:rotate(-3deg);
			transform:rotate(-3deg);
}

.lifted:after {
	right:10px; 
	left:auto;
	-webkit-transform:rotate(3deg);   
	   -moz-transform:rotate(3deg);  
		-ms-transform:rotate(3deg);  
		 -o-transform:rotate(3deg);
			transform:rotate(3deg);
}

/* Curled corners */

.curled {
	border:1px solid #efefef; 
	-moz-border-radius:0 0 120px 120px / 0 0 6px 6px;    
		 border-radius:0 0 120px 120px / 0 0 6px 6px;
}

.curled:before,
.curled:after {
	bottom:12px;
	left:10px;
	width:50%;
	height:55%;
	max-width:200px;
	-webkit-box-shadow:0 8px 12px rgba(0, 0, 0, 0.5); 
	   -moz-box-shadow:0 8px 12px rgba(0, 0, 0, 0.5); 
			box-shadow:0 8px 12px rgba(0, 0, 0, 0.5); 
	-webkit-transform:skew(-8deg) rotate(-3deg);
	   -moz-transform:skew(-8deg) rotate(-3deg);
		-ms-transform:skew(-8deg) rotate(-3deg);
		 -o-transform:skew(-8deg) rotate(-3deg);
			transform:skew(-8deg) rotate(-3deg);
} 

.curled:after { 
	right:10px; 
	left:auto;
	-webkit-transform:skew(8deg) rotate(3deg); 
	   -moz-transform:skew(8deg) rotate(3deg);     
		-ms-transform:skew(8deg) rotate(3deg);     
		 -o-transform:skew(8deg) rotate(3deg); 
			transform:skew(8deg) rotate(3deg);
}

/* Perspective */

.perspective:before {
	left:80px;
	bottom:5px;
	width:50%;
	height:35%;
	max-width:200px;
	-webkit-box-shadow:-80px 0 8px rgba(0, 0, 0, 0.4);
	   -moz-box-shadow:-80px 0 8px rgba(0, 0, 0, 0.4);
			box-shadow:-80px 0 8px rgba(0, 0, 0, 0.4);
	-webkit-transform:skew(50deg);
	   -moz-transform:skew(50deg);
		-ms-transform:skew(50deg);
		 -o-transform:skew(50deg);
			transform:skew(50deg);
	-webkit-transform-origin:0 100%;
	   -moz-transform-origin:0 100%;
		-ms-transform-origin:0 100%;
		 -o-transform-origin:0 100%;
			transform-origin:0 100%;
}

.perspective:after {
	display:none;
}

/* Raised shadow - no pseudo-elements needed */

.raised {
	-webkit-box-shadow: 0 15px 10px -10px rgba(0, 0, 0, 0.5), 0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
	   -moz-box-shadow: 0 15px 10px -10px rgba(0, 0, 0, 0.5), 0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
			box-shadow: 0 15px 10px -10px rgba(0, 0, 0, 0.5), 0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
}

/* Curved shadows */

.curved:before {
	top:10px;
	bottom:10px;
	left:0;
	right:50%;
	-webkit-box-shadow:0 0 15px rgba(0,0,0,0.6);
	-moz-box-shadow:0 0 15px rgba(0,0,0,0.6);
	box-shadow:0 0 15px rgba(0,0,0,0.6);
	-moz-border-radius:10px / 100px;
	border-radius:10px / 100px;
}

.curved-vt-2:before {
	right:0;
}

.curved-hz-1:before {
	top:50%;
	bottom:0;
	left:10px;
	right:10px;
	-moz-border-radius:100px / 10px;
	border-radius:100px / 10px;
}

.curved-hz-2:before {
	top:0;
	bottom:0;
	left:10px;
	right:10px;
	-moz-border-radius:100px / 10px;
	border-radius:100px / 10px;
}

/* Rotated box */

.rotated {
	-webkit-box-shadow:none;
	   -moz-box-shadow:none;
			box-shadow:none;
	-webkit-transform:rotate(-3deg);    
	   -moz-transform:rotate(-3deg);   
		-ms-transform:rotate(-3deg);
		 -o-transform:rotate(-3deg);
			transform:rotate(-3deg);
}

.rotated > :first-child:before {
	content:""; position:absolute; z-index:-1; top:0; bottom:0; 
	left:0; right:0; background:#fff; -webkit-box-shadow:0 1px 
	4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
	   -moz-box-shadow:0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
			box-shadow:0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset;
}