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<!DOCTYPE html>
<link rel="match" href="root-element-background-margin-opacity-ref.html">
<meta name="fuzzy" content="maxDifference=0-1;totalPixels=0-10000">
<style>
html {
margin: 100px;
width: 100px;
height: 100px;
background: linear-gradient(green, green) top left no-repeat;
opacity: 0.5;
}
</style>