<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"> <html lang="en"> <head> <title>Margin Collapsing: in flow (height)</title> <style type="text/css"> table { border-spacing: 0; font-size: 50px; border: solid; background: red; } td { padding: 0; width: 1em; } div { background: lime; } .a .container { height: 1em; height: 1.1em; } .a .sized { height: 1.0em; margin: 0 0 1em 0; } .a .after { height: 0.9em; } .b .container { height: 1em; height: 1.0em; } .b .sized { height: 1.0em; margin: 0 0 1em 0; } .b .after { height: 1.0em; } .c .container { height: 1em; height: 0.9em; } .c .sized { height: 1.0em; margin: 0 0 1em 0; } .c .after { height: 1.1em; } </style> </head> <body> <p>There should be no red on this page.</p> <table> <tr> <td class="a"> <div class="container"> <div class="sized"></div> </div> <div class="after"></div> </td> <td class="b"> <div class="container"> <div class="sized"></div> </div> <div class="after"></div> </td> <td class="c"> <div class="container"> <div class="sized"></div> </div> <div class="after"></div> </td> </tr> </table> <p>See also: <a href="http://www.hixie.ch/tests/adhoc/css/box/block/height/002.html">prerequisite</a>.</p> </body> </html>