<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<html xmlns="http://www.w3.org/1999/xhtml"
     xmlns:svg="http://www.w3.org/2000/svg"
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<head>
<style>
.unit { display:inline-block; width:50px; height:10px; }
</style>
</head>
<body style="margin:0">
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    <span class="unit"></span>
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    <span class="unit" style="background:lime;"></span>
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</body>
</html>