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chromium/third_party/blink/web_tests/fast/block/positioning/056.html 

<html>
<head>
<style>
#sitemast {
  position: absolute; width:1.5em;
  font-family: Ahem;
  font-size:400%;
}
#sitemast a {color: green; background: green; padding: 0; text-decoration: none }

  </style>
</head>
<body>
You should see a single green stripe below. The test has failed if you don't see a
perfect rectangle.
<div id="sitemast">
<a><span>A </span> A<br><span>A </span> A A</a>
</div>