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Test Info:

<!DOCTYPE html>
<link rel="match" href="negative-outline-offset-ref.html">
<style>
div {
outline: 1px solid red;
outline-offset: -10em;
border: 2px solid black;
padding: 5px;
font-size: 16px;
}
</style>
<p>PASS if there is a thin red line in the middle of the box.</p>
<div></div>