LayoutTests/fast/css/last-child-style-sharing.html - WebKit - Git at Google

 <html>
     <head>
         <style type="text/css">
             div {
                 background-color: red;
                 width: 100px;
                 height: 100px;
             }

             div:last-child {
                 position: relative;
                 top: -100px;
                 background-color: green;
             }
         </style>
     </head>
     <body>
         <div></div>
         <div></div>
     </body>
 </html>
	<html>
	<head>
	<style type="text/css">
	div {
	background-color: red;
	width: 100px;
	height: 100px;
	}

	div:last-child {
	position: relative;
	top: -100px;
	background-color: green;
	}
	</style>
	</head>
	<body>
	<div></div>
	<div></div>
	</body>
	</html>