<!DOCTYPE html> <html> <head> <title>Testcase, bug 367504 -- inline block as margin root</title> <style type="text/css"> span#ib { display: inline-block; vertical-align: text-bottom; } span#ib span { float:left } </style> </head> <body> <table border><tr><td> <p>x<span id="ib"><span>test</span></span>x</p> </td></tr></table> </body> </html>