rucksack-css/test/fixtures/quantity.expected.css

A little bag of CSS superpowers

.foo > li:nth-last-child(n+4), .foo > li:nth-last-child(n+4) ~ li {
  content: 'test';
}

.bar > li:nth-last-child(-n+4):first-child, .bar > li:nth-last-child(-n+4):first-child ~ li {
  content: 'test';
}

.baz > li:nth-last-child(n+4):nth-last-child(-n+6):first-child, .baz > li:nth-last-child(n+4):nth-last-child(-n+6):first-child ~ li {
  content: 'test';
}

.fab > li:nth-last-child(4):first-child, .fab > li:nth-last-child(4):first-child ~ li {
  content: 'test';
}