.anchor {
  scroll-margin-top: calc(
    var(--header-height, 0px) * var(--enable-sticky-header) +
      var(--announcement-bar-height, 0px) *
      var(--enable-sticky-announcement-bar) + var(--anchor-offset, 20px)
  );
}

.anchor.vertical-breather:not(.vertical-breather--margin) {
  --anchor-offset: 0px;
}

.anchor.vertical-breather--margin {
  --anchor-offset: var(--vertical-breather);
}

.anchor.vertical-breather--tight.vertical-breather--margin {
  --anchor-offset: var(--vertical-breather-tight);
}