代码如下：
<style>
.icon{margin:300px;width:30px;height:30px;position:relative}
.icon .b{border:2px solid #666;width:100%;height:100%;border-radius:3px}
.icon .h{background-color:#fff;width:112%;height:49%;position:absolute;left:0;top:32%}
.icon .s{background-color:#fff;width:49%;height:112%;position:absolute;left:32%;top:0}
.icon .z{background-color:#666;width:65%;height:2px;line-height:0;font-size:0;position:absolute;left:22%;top:53%}
</style>
</head>
<body>
<div class="icon">
<div class="b"></div>
<div class="h"></div>
<div class="s"></div>
<div class="z"></div>
</div>
用CSS写扫描二维码图标
原文地址：http://www.cnblogs.com/jooan/p/8036922.html