/* external sites */
a[href^="http://"]:not([href*="http://www.rezeau.org/wp-flore"]):after,
a[href^="https://"]:not([href*="https://www.rezeau.org/wp-flore"]):after {
  font-family: 'Font Awesome 5 Free';
  content: ' \f35d';
  font-weight: 600;
}