<?xml version="1.0" encoding="UTF-8"?>
<buttons>
  <button label='Pulsante 1 in main_button.xml' id='btnMain1' color='var(--color-gts-700)'  class='cards-bck fa fa-key' link='linkmain1.php' size='4' />  
  <button label='Pulsante 2 in main_button.xml' id='btnMain2' color='var(--color-gts-400)'  class='cards-bck fa fa-key' link='linkmain2.php' size='4' />  
</buttons>
