用相对定位和负向移动完成图片象框阴影
<style>
.out {
position:relative;
background:#bbb;
margin:10px auto;
width:285px
}
.in {
background:#fff;
border:1px solid #555;
padding:10px 5px;
position:relative;
top:-5px;
left:-5px;
}
</style>
<div class="out"> <div class="in" > <img src="http://www.68design.net/imagelist/06/24/k6xq28872yvo.jpg" alt="" /> </div></div>