<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>CSS圆角</title>
</head>
<style type="text/css">
body {
background: #fff;
font-family: sans-serif;
font-size: 11px;
}
#container {background:#d8d8ee; width:600px; margin:15px; padding:20px;}
.xsnazzy h1, .xsnazzy h2, .xsnazzy p {margin:0 10px; letter-spacing:1px;}
.xsnazzy h1 {font-size:2.5em; color:#fc0;}
.xsnazzy h2 {font-size:2em; color:#234; border:0;}
.xsnazzy p {padding-bottom:0.5em; color:#eee;}
.xsnazzy h2 {padding-top:0.5em; padding-left:10px;}
.xsnazzy {background: transparent; margin:1em;}
.xsnazzy em {display:block; width:0; height:0; color:#d8d8ee; overflow:hidden; border-top:12px solid #fff; border-left:12px dotted transparent; border-right:12px dotted transparent; margin-left:50px;}
* html .xsnazzy em {width:24px; height:12px; w\idth:0; hei\ght:0;} /* www.codefans.net */
.xsnazzy span {display:block; width:0; height:0; color:#fff; overflow:hidden; border-top:10px solid #7f7f9c; border-left:10px dotted transparent; border-right:10px dotted transparent; margin-left:52px; margin-top:-15px;}
* html .xsnazzy span {width:20px; height:10px; w\idth:0; hei\ght:0;}
.xb1, .xb2, .xb3, .xb4, .xb5, .xb6, .xb7 {display:block; overflow:hidden; font-size:0;}
.xb1, .xb2, .xb3, .xb4, .xb5, .xb6 {height:1px;}
.xb4, .xb5, .xb6, .xb7 {background:#ccc; border-left:1px solid #fff; border-right:1px solid #fff;}
.xb1 {margin:0 8px; background:#fff;}
.xb2 {margin:0 6px; background:#fff;}
.xb3 {margin:0 4px; background:#fff;}
.xb4 {margin:0 3px; background:#7f7f9c; border-width:0 5px;}
.xb5 {margin:0 2px; background:#7f7f9c; border-width:0 4px;}
.xb6 {margin:0 2px; background:#7f7f9c; border-width:0 3px;}
.xb7 {margin:0 1px; background:#7f7f9c; border-width:0 3px; height:2px;}
.xboxcontent {display:block; background:#7f7f9c; border:3px solid #fff; border-width:0 3px;}
#picture {width:600px; height:400px; background:url() center top; padding:80px 20px 0 20px; margin:15px;}
</style>
<body>
<div ></b>
<em></em><span></span>
</div>
</div>
<div ></b>
<em></em><span></span>
</div>
</div>
</body>
</html>
http://www.codefans.net/jscss/code/381.shtml 运行效果