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<!--
Any copyright is dedicated to the Public Domain.
-->
<!DOCTYPE html>
<html>
<head>
<style>
.unit { display:inline-block; width:100px; height:1px; background:blue; }
</style>
</head>
<body style="margin:0; width:300px; line-height:100px;">
<span class="unit"></span><span class="unit"
></span><span class="unit"></span><span style="background:lime"><span class="unit"
></span></span>
</body>
</html>