1122366-1-margin-collapse-ref.html

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<!DOCTYPE html>

<html>

 <head>

  <title>Bug 1122366 - margin collapsing</title>

  <style type="text/css">

  div {

    font: 40px/1em serif;

    height: 4em;

  div.wrapper {

    margin: 10px;

    background: blue;

    border-left: green solid .5em;

    border-right: green solid 1.5em;

    width: 2em;

  </style>

 </head>

 <body>

  <div class="wrapper">

  </div>

  <div class="wrapper">

  </div>

 </body>

</html>