郑州Net俱乐部 / CSS阴影效果

<div class="img-wrapper" >
  <img src="img.jpg"/>
</div>
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.img-wrapper {
  background-color:#aaa;
  margin:50px;
  float:left;
  position:relative; }
.img-wrapper img {
  margin:-5px 5px 5px -5px;
  border:1px solid #a9a9a9;
  background-color:#fff;
  padding:5px;
  position:relative;
  display:block;  }
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效果图: