<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"> body > span { outline: 1px dotted black; } body > span > span { display: block; width: 10em; } </style> </head> <body> <span><span>A</span><span>A</span></span> </body> </html>
