<!DOCTYPE html> <html> <head> <!-- dbaron thinks the validity of this test is questionable, see https://bugzilla.mozilla.org/show_bug.cgi?id=477462#c20 and #c21 --> <style type="text/css"> #table { width: 100px; } #caption1 { height: 20px; background-color: red; margin-bottom: 20px; } #caption2 { height: 20px; background-color: blue; margin-bottom: 20px; } #caption3 { height: 20px; background-color: green; } </style> </head> <body> <div id="table"> <div id="caption1"></div> <div id="caption2"></div> <div id="caption3"></div> </div> </body> </html>