.rating {
  letter-spacing: .2em;
  color: $color-link-blue;
  font-weight: bold;
}

$rating-list: ('1', 'T'),
  ('1-5', 'T+'),
  ('2', 'TT'),
  ('2-5', 'TT+'),
  ('3', 'TTT'),
  ('3-5', 'TTT+'),
  ('4', 'TTTT'),
  ('4-5', 'TTTT+'),
  ('5', 'TTTTT'),
  ('5-5', 'TTTTT+');

@each $rating-variable, $rating in $rating-list {
  .rating-#{$rating-variable}:before {
    content: $rating;
  }
}