<!DOCTYPE HTML> <!-- standards mode only! --> <html> <head> <title>Testcase, overflow on empty spans</title> <style type="text/css"> html, body { margin: 0; padding: 0.25em; } div { background:aqua; } div > span { outline: 1px dotted black; } div > span > span { display:block; margin: 0 1em; } </style> </head> <body> <div> <span> <span>text</span></span> </div> </body> </html>