<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"> <html lang="en"> <head> <title>Margin Collapsing: in flow (simple)</title> <style type="text/css"> .ahem { display: inline; font: 1em/1 Ahem, sans-serif; background: red; color: white; } table { border-spacing: 0; font: 50px/1 Ahem; border: solid; background: red; } td { padding: 0; } /* test */ .test { background: orange; } .test div { margin: 1em 0; background: red; } .test .a { color: yellow; } .test .b { color: lime; } /* control */ .control div { width: 1em; } .control .c { border-top: 1em orange solid; } .control .a { border-top: 1em yellow solid; } .control .b { border-top: 1em lime solid; } /* control control */ .red { background: red; height: 1em; width: 10em; border: solid; } .orange { border-top: 1em orange solid; } </style> </head> <body> <div class="ahem">Ahem_font_required_for_this_test.</div> <p>The following two columns should be pixel perfect identical with no red visible.</p> <table> <tr> <td class="test"> <div class="a">X</div> <div class="b">X</div> </td> <td class="control"> <div class="c"></div> <div class="a"></div> <div class="c"></div> <div class="b"></div> <div class="c"></div> </td> </tr> </table> <p>Control: This test is meaningless if you see any red below. (You should only see orange.)</p> <div class="red"> <div class="orange"></div> </div> </body> </html>