a[href]:not(:where(
    /* exclude hash only links */
    [href^="#"],
    /* exclude javascript only links */
    [href^="javascript:" i],
    /* exclude relative but not double slash only links */
    [href^="/"]:not([href^="//"]),
    /* domains to exclude */
    [href*="//brianjdevries.com"],
    /* subdomains to exclude */
    [href*="//assets.vries.land"],
    .no-indicator,
    .button
  )):after {
  position: static;
  display: inline-block;
  inline-size: 1em;
  block-size: 1em;
  background-image: url('/images/external.svg');
  background-repeat: no-repeat;
  background-position: center;
  background-size: 60% auto;
  /* alternative text rules */
  content: '(external link)';
  overflow: hidden;
  white-space: nowrap;
  text-indent: 1em;
  /* the width of the icon */
  padding-inline-end: 0.8em;
}