$('.box.standard')
.shadow();
$('.box.lifted')
.shadow('lifted');
$('.box.perspective')
.shadow('perspective');
$('.box.raised')
.shadow('raised');
$('.box.sides-vt-1')
.shadow({type:'sides', sides:'vt-1'});
$('.box.sides-vt-2')
.shadow({type:'sides', sides:'vt-2'});
$('.box.sides-hz-1')
.shadow({type:'sides', sides:'hz-1'});
$('.box.sides-hz-2')
.shadow({type:'sides', sides:'hz-2'});
$('.box.rotated')
.shadow({type:'rotated',
rotate:'-5deg'});
.rotated.lifted
.rotated.perspective
.rotated.raised
来源：A8源码网