#intercom-container iframe.intercom-launcher-frame {
  height: 50px !important;
  width: 50px !important; 
}

/* iframe content */
#intercom-container .intercom-launcher {
  height: 50px;
  width: 50px; 
}

#intercom-container .intercom-launcher-open-icon {
  background-position: 50% 60%;
  background-size: 54% 60%; 
}

#intercom-container .intercom-launcher-close-icon {
  background-size: 30%; 
}