button:focus {
  box-shadow: 0 0 0 1px var(--interactive-accent);
}

#calendar-container [data-emoji-tag]::after {
  content: attr(data-emoji-tag);
  position: absolute;
  top: -4px;
  right: 4px;
  height: 8px;
  width: 8px;
  z-index: 1;
}