<!DOCTYPE html>
<html>
  <head>
    <title>body text and bgcolor above children with negative z-index</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <script type="text/javascript" src="../../test.js"></script>
    <style type="text/css">
    * {margin:0;padding:0;}
    html {background-color: gray;}
    body {
        background-color: green;
    }
    #div1 {
        background-color:cyan;
        width:200px;
        height:200px;
        z-index:-1;
        position:absolute;
        top:0; left:0;
    }
    body {
        font-family: Arial;
    }
    </style></head>

  <body>body
    <div id="div1"></div>
  </body>
</html>