nth-check

Parses and compiles CSS nth-checks to highly optimized functions.

circular-at

Access array items at any positive or negative index. If the index is out of bounds, it will be wrapped around the length of the array.

ordinal-js

Utility to convert from numbers to their ordinal representations

family.scss

family.scss is a set of Sass mixins which will help you to manage the style of :nth-child'ified elements, in an easy way