道理很简单，就是通过几个元素阴影叠加，生成我们看到的这种效果，主要是对阴影样式的运用，以及 before 和 after 元素的运用，直接上代码：<喎?http://www.weiyer.com/Search.asp?KeyWord=/kf/ware/vc/" target="_blank" class="keylink">vcD4NCjxwPjxzdHJvbmc+aHRtbCC0+sLro7o8L3N0cm9uZz48L3A+DQo8cHJlIGNsYXNzPQ=="brush:java;">

shadow effect

css 样式代码：

/* 
**author:青天诀;
 */

body,h1,ul,li{
    margin: 0;
    padding: 0;
}
body{
    font-family: Arial;
    font-size: 20px;
}

ul,li{
    list-style: none;   
}

.wrap{
    width: 50%;
    height: 200px;
    background-color: #fff;
    margin: 50px auto;
    position: relative;
}

.wrap h1{
    line-height: 200px;
    text-align: center;
    font-size: 20px;
}

.effect{
    -webkit-box-shadow: 0px 1px 4px rgba(0,0,0,.3), 0px 0px 40px rgba(0,0,0,.1) inset;
    -moz-box-shadow: 0px 1px 4px rgba(0,0,0,.3), 0px 0px 40px rgba(0,0,0,.1) inset;
    -o-box-shadow: 0px 1px 4px rgba(0,0,0,.3), 0px 0px 40px rgba(0,0,0,.1) inset;
    -mz-box-shadow: 0px 1px 4px rgba(0,0,0,.3), 0px 0px 40px rgba(0,0,0,.1) inset;
    box-shadow: 0px 1px 4px rgba(0,0,0,.3), 0px 0px 40px rgba(0,0,0,.1) inset;
}

.effect:before, .effect:after{
    content: ;
    background-color: red;
    position: absolute;
    z-index: -1;
    left: 10px;
    right: 10px;
    top: 50%;
    bottom: 0px;
    -webkit-box-shadow: 0px 0px 20px rgba(0,0,0,.8);
    -moz-box-shadow: 0px 0px 20px rgba(0,0,0,.8);
    -o-box-shadow: 0px 0px 20px rgba(0,0,0,.8);
    -mz-box-shadow: 0px 0px 20px rgba(0,0,0,.8);
    box-shadow: 0px 0px 20px rgba(0,0,0,.8);
    border-radius: 50px;
}