曲线阴影z-index不管用。。。
.jj {
height:300px;
height:200px;
position:relative;
box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;
-moz-box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;
-o-box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;
-webkit-box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;
}
.jj:after,.jj:before {
content:'';
background:#f00;
position:absolute;
z-index:-6;
top:50%;
bottom:0;
left:10px;
right:10px;
-webkit-box-shadow:0 0 20px rgba(0,0,0,0.8);
box-shadow:0 0 20px rgba(0,0,0,0.8);
-o-box-shadow:0 0 20px rgba(0,0,0,0.8);
-moz-box-shadow:0 0 20px rgba(0,0,0,0.8);
border-radius:100px/10px;
}