<html>
<head>
<title>纯CSS实现圆角效果</title>
<style type="text/CSS">
div.RoundedCorner{background: #9bd1fa}
b.rtop, b.rbottom{display:block;background: #fff}
b.rtop b, b.rbottom b{display:block;height: 1px;overflow: hidden; background: #9bd1fa}
b.r1{margin: 0 5px}
b.r2{margin: 0 3px}
b.r3{margin: 0 2px}
b.rtop b.r4, b.rbottom b.r4{margin: 0 1px;height: 2px}
</style>
</head>
<body >
<div class="RoundedCorner">
<b class="rtop"><b class="r1"></b><b class="r2"></b><b class="r3"></b><b class="r4"></b></b>
<br/>无图片纯CSS实现圆角框<br/><br/>
<b class="rbottom"><b class="r4"></b><b class="r3"></b><b class="r2"></b><b class="r1"></b></b>
</div>
<script type='text/javascript'>
//<![CDATA[
if (document.getElementById('processtime')) document.getElementById('processtime').innerHTML="<span class='runtimedisplay'>Run in 71 ms, 11 Queries, Gzip enabled.</span>";
//]]>
</script></body>
</html>