<!DOCTYPE html>
<html>
  <head>
    <title>Test mpadded</title>
    <style type="text/css">
      div#square1 {
        position: absolute;
        width: 100px;
        height: 100px;
        background: blue;
      }

      div#square2 {
        position:absolute;
        width: 20px;
        height: 20px;
        left: 10px;
        top: 55px;
        background: red;
      }
      /* left = lspace = 10;
         top = heightBig - heightSmall - voffset;
         top = 50 - 10 + 15 = 55px */
      </style>
  </head>
  <body>
    <div id="square1">
      <div id="square2">
      </div>
    </div>
  </body>
<html>