CSS3实现翘边的阴影效果的代码示例

效果：

HTML代码：

XML/HTML Code 复制内容到剪贴板

<div class="box shadow">div>

CSS代码：

CSS Code 复制内容到剪贴板

.box {
    width: 300px;
    height: 100px;
    background: #ccc;
    border-radius: 10px;
    margin: 10px;
}

.shadow {
    position: relative;
    max-width: 270px;
    box-shadow: 0px 1px 4px rgba(0,0,0,0.3),/* 外阴影*/
                0px 0px 20px rgba(0,0,0,0.1) inset;/*内阴影*/
}

.shadow::before,
.shadow::after {
   content:"";
   position:absolute;
   z-index:-1;
}

.shadow::before,
.shadow::after {
   content:"";
   position:absolute;
   z-index:-1;
   bottombottom:15px;
   left:10px;
   width:50%;
   height:20%;
}

.shadow::before,
.shadow::after {
   content:"";
   position:absolute;
   z-index:-1;
   bottombottom:15px;
   left:10px;
   width:50%;
   height:20%;
   box-shadow:0 15px 10px rgba(0, 0, 0, 0.7);
   transform:rotate(-3deg);
}

.shadow::after{
   rightright:10px;
   left:auto;
   transform:rotate(3deg);
 }

伪元素before和after意思是在被选元素的内容前或后 插入内容