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+<!DOCTYPE html>
+<html>
+ <head>
+ <title>Opacity on Root Element With background image</title>
+ <link rel="author" title="Matt Woodrow" href="mailto:mattwoodrow@apple.com">
+ <link rel="help" href="https://drafts.fxtf.org/compositing/#pagebackdrop">
+ <meta name="assert" content="The background image should have opacity applied to
+ it as part of the Root Element Group">
+ <link rel="match" href="root-element-background-image-transparency-001-ref.html">
+ <meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-237600" />
+ <style>
+ html {
+ background: url(support/transform-triangle-left.svg) fixed;
+ opacity: 0.5;
+ will-change: opacity;
+ }
+ body {
+ /* The default 8px margin makes the background not line up exactly */
+ margin: 0;
+ }
+ </style>
+ </head>
+ <body>
+ </body>
+</html>