xul叫模块里面的字居中以及叫按钮靠右下角

<window title="&desktopxset.workstation.label;"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        width="428"
        height="251"
        class="container"
        hidechrome="true"
        onload="init();">
<box>

     <vbox  id="JZ">
        <label id="edition" value="我是好人"/>

<label id="corporation" value="好人"/>

     </vbox>

    <box id="but">
        <button id="keyQuit" label=" 确定" onclick="window.close();"/>
    </box>
</box>
    <script>

    function winClose()
               {
                window.close();      
            }

    </script>
</window>