<?xml version="1.0"?> <?xml-stylesheet href="chrome://global/skin/" type="text/css"?> <window id="test-canvas" title="Canvas in XUL test" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" xmlns:html="http://www.w3.org/1999/xhtml"> <box style="width: 100px; height: 100px; max-width: 100px; max-height: 100px; background: red"/> </window>