<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<window title="XUL Layout"
xmlns="
http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
xmlns:html="
http://www.w3.org/1999/xhtml">
<vbox style="overflow:auto; height:200px">
<html:span style="color:blue; position:relative">Hello Kitty<html:span style="position:
absolute; top: 300px; left: 0">should not appear</html:span></html:span>
</vbox>
</window>
