LayoutTests/fast/block/block-only/relative-position-when-containing-block-is-not-in-the-formatting-context.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <body>
 <div style="border: 1px solid green; position: relative; top: 100px; left: 100px; width: 100px; height: 100px; padding: 20px;">
     <div style="overflow: hidden; border: 1px solid red; width: 50px; height: 50px">
         <div style="position: relative; left: -5px; top: -5px; width: 10px; height: 10px; border: 1px solid blue"></div>
     </div>
 </div>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<body>
	<div style="border: 1px solid green; position: relative; top: 100px; left: 100px; width: 100px; height: 100px; padding: 20px;">
	<div style="overflow: hidden; border: 1px solid red; width: 50px; height: 50px">
	<div style="position: relative; left: -5px; top: -5px; width: 10px; height: 10px; border: 1px solid blue"></div>
	</div>
	</div>
	</body>
	</html>