@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document url-prefix("http://www.google.com/calendar/"), 
               url-prefix("https://www.google.com/calendar/") {



  /*** Saturday on main calendar ***/
  .st-dtitle:last-child:not(.st-dtitle-nonmonth) {
    background-color: #D1E6B3 !important;
  }

  /*** Sunday on main calendar ***/
  .st-dtitle:first-child:not(.st-dtitle-nonmonth) {
    background-color: #D1E6B3 !important;
  }



}