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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 Test: Absolutely positioned non-replaced elements with 'margin-left' and 'margin-right' set to 'auto'</title>
+        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
+        <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-08-31 -->
+        <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width" />
+		<link rel="match" href="absolute-non-replaced-width-003-ref.xht" />
+
+        <meta name="flags" content="ahem" />
+        <meta name="assert" content="When 'left', 'width' and 'right' are not 'auto', set 'margin-left' and 'margin-right' to equal values." />
+        <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+        <style type="text/css">
+            #containingblock
+            {
+                border: solid black;
+                height: 200px;
+                position: relative;
+                width: 400px;
+            }
+            div div
+            {
+                /*
+                  left				:  100px
+                +
+                  margin-left		:  solve
+                +
+                  border-left-width :    0px
+                +
+                  padding-left		:    0px
+                +
+                  width				:  100px
+                +
+                  padding-right		:    0px
+                +
+                  border-right-width:    0px
+                +
+                  margin-right		:  solve
+                +
+                  right				: -200px
+                =============================
+          width of containing block :  400px
+
+                */
+
+                background: red;
+                color: blue;
+                font: 100px/1em Ahem;
+                left: 100px;
+                margin-left: auto; /* value is solved to 200px */
+                margin-right: auto; /* value is solved to 200px */
+                position: absolute;
+                right: -200px;
+                width: 100px;
+            }
+        </style>
+    </head>
+    <body>
+        <p>Test passes if a filled blue square is in the <strong>upper-right corner</strong> of an hollow black rectangle and if there is <strong>no red</strong>.</p>
+        <div id="containingblock">
+            <div>X</div>
+        </div>
+    </body>
+</html>