Sin usar imágenes
Código HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<style>
div#nifty{ margin: 0 ;background: #F0EDE0}
b.rtop, b.rbottom{display:block;background: #FFF}
b.rtop b, b.rbottom b{display:block;height: 1px;
overflow: hidden; background: #F0EDE0}
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 id="nifty">
<b class="rtop"><b class="r1"></b><b class="r2"></b><b
class="r3"></b><b class="r4"></b></b>
[Aquí el contenido]
<b class="rbottom"><b class="r4"></b><b
class="r3"></b><b class="r2"></b><b
class="r1"></b></b></div>
</body>
</html> http://usalo.blogspot.com/2005/05/li...s-con-css.html