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diff --git a/testing/web-platform/tests/css/css-writing-modes/background-position-vlr-011.xht b/testing/web-platform/tests/css/css-writing-modes/background-position-vlr-011.xht
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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+ <head>
+
+  <title>CSS Writing Modes Test: 'background-position: left top' and 'vertical-lr'</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
+  <link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#physical-only" title="7.6 Purely Physical Mappings" />
+
+  <meta content="image interact" name="flags" />
+  <meta content="This test checks that 'background-position: left top' will make background-image start at upper left corner of page (even in case there is resizing of the window) because background properties should not be affected by vertical writing-mode." name="assert" />
+
+  <style type="text/css"><![CDATA[
+  html
+    {
+      background-image: url("support/cat.png");
+      background-position: left top;
+      background-repeat: repeat-y;
+      writing-mode: vertical-lr;
+    }
+  ]]></style>
+ </head>
+
+ <body>
+
+  <div><img src="support/pass-cdts-bg-pos-vrl-010.png" width="465" height="94" alt="Image download support must be enabled" /></div>
+
+<!--
+  The image says:
+
+  Test passes if there is a column of cats on
+  the left of the page and if one of the cats
+  starts <strong>exactly inside the top left corner</strong>
+  of the page. This should remain true even
+  after resizing the window.
+-->
+
+ </body>
+</html>
+\ No newline at end of file