@mixin notification_counter() {
  display: inline-block;
  position: absolute;
  top: 0.25rem;
  right: 0;
  color: #fff;
  background: #f1b746;
  font-size: 0.625rem;
  line-height: .75rem;
  padding: 0 .1875rem;
  border-radius: 1rem;
  border: .125rem solid #fff;
}