<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-container width="1in">
                    <fo:block padding-top="25%" background-color="aqua">This element should have a top padding of 25% (.25in), which is calculated with respect to the width of the containing block. Both the content background and the padding should be aqua (light blue). This will require extra text in order to test.</fo:block>
               </fo:block-container>
          </fo:flow>
     </fo:page-sequence>
</fo:root>