Using panelGridLayout, panelGridRow & panelGridCell

  <af:panelGridLayout id="pgl2">
            <af:gridRow marginTop="20px" marginBottom="20px" height="auto" id="gr1">
                <af:gridCell id="gc1" width="100%" halign="center">
                    <af:outputText value="Review : #{pageFlowScope.Employee}" id="ot1"
                                   inlineStyle="font-size:large;" partialTriggers="b2"/>
                </af:gridCell>
            </af:gridRow>
        </af:panelGridLayout>