<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" >
     <fo:layout-master-set>
          <fo:simple-page-master master-name="test-page-master" page-width="8.5in" page-height="11in">
               <fo:region-body margin-top="0.4in"/>
               <fo:region-before extent="0.3in"/>
          </fo:simple-page-master>
     </fo:layout-master-set>
     <fo:page-sequence master-name="test-page-master">
          <fo:flow flow-name="xsl-region-body">
               <fo:block margin-left="auto" margin-right="0in" background-color="gray">Due to 'auto' values applied to the left margin, the element should be right justified within its parent. The gray rectangle should therefore appear on the right edge of the viewport (e.g., the browser window). The text inside the gray rectangle should not be centered.</fo:block>
          </fo:flow>
     </fo:page-sequence>
</fo:root>