1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <style> span { display:block; outline: 10px solid yellow; } </style> </head> <body> <div> <div style="display: -moz-inline-box"> <span>M</span> <span>N</span> </div> </div> </body> </html>