圆角边框最简洁最兼容的写法怎么写？

如题，求助圆角边框的写法，最好是用的代码最少并且每个浏览器的兼容最好的写法

CSS圆角边框 纯CSS制作[转] 这也是我以后一定要用的 http://www.52css.com/article.asp?id=428

<style type="text/css">

#xsnazzy h1, #xsnazzy h2, #xsnazzy p {margin:0 10px; letter-spacing:1px;}
#xsnazzy h1 {font-size:2.5em; color:#fff;}
#xsnazzy h2 {font-size:2em;color:#06a; border:0;}
#xsnazzy p {padding-bottom:0.5em;}
#xsnazzy h2 {padding-top:0.5em;}
#xsnazzy {background: transparent; margin:1em;}

.xtop, .xbottom {display:block; background:transparent; font-size:1px;}
.xb1, .xb2, .xb3, .xb4 {display:block; overflow:hidden;}
.xb1, .xb2, .xb3 {height:1px;}
.xb2, .xb3, .xb4 {background:#ccc; border-left:1px solid #08c; border-right:1px solid #08c;}
.xb1 {margin:0 5px; background:#08c;}
.xb2 {margin:0 3px; border-width:0 2px;}
.xb3 {margin:0 2px;}
.xb4 {height:2px; margin:0 1px;}

.xboxcontent {display:block; background:#ccc; border:0 solid #08c; border-width:0 1px;}


</style>

<div id="xsnazzy">
<b class="xtop"><b class="xb1"></b><b class="xb2"></b><b class="xb3"></b><b class="xb4"></b></b>
<div class="xboxcontent">
<h1>Snazzy Borders</h1>
<p>Based on Nifty Corners By Alessandro Fulciniti<br /> http://pro.html.it/esempio/nifty/

<h2>Rounded borders without images</h2>
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh
euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim
ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl
ut aliquip ex ea commodo consequat.</p>
<p>Duis autem vel eum iriure dolor in hendrerit
in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla
facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent
luptatum zzril delenit augue duis dolore te feugait nulla facilisi.</p>
</div>
<b class="xbottom"><b class="xb4"></b><b class="xb3"></b><b class="xb2"></b><b class="xb1"></b></b>
</div>