<?xml version="1.0"?>
<!DOCTYPE window>
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        title="XUL Grid Test">
  <grid>
    <columns>
      <column style="background:aqua">
        <label value="Left" />
      </column>
      <column style="background:yellow">
        <textbox value="Right" />
      </column>
    </columns>
  </grid>
</window>