/* 外部リンクにiconをつける */  
.line span:not(.pointing-device-map) > a.link:not([href^="https://scrapbox.io"]) span:last-of-type::after {
   font-family: 'Font Awesome 5 Free', 'Font Awesome 5 Brands';
   font-weight: 900;
   font-size: 0.8rem;
   content: ' \f35d';
   display: inline-block;
}