append($list, $val, $separator:auto) Appends a single value onto the end of a list. Unless

Referencing Parent Selectors: & Sometimes it’s useful to use a nested rule’s parent selector in other ways than the default

random random($limit)

scale_color($color, [$red], [$green], [$blue], [$saturation], [$lightness], [$alpha]) Fluidly scales one or more properties

map_values($map) Returns a list of all values in a map. This list may include duplicate values, if multiple keys have the

to_upper_case($string) Converts a string to upper case.

min($numbers...) Finds the minimum of several numbers. This function takes any number of arguments.

unique_id Returns a unique CSS identifier. The identifier is returned as an unquoted string. The identifier returned is only

quote($string) Add quotes to a string if the string isn’t quoted, or returns the same string if it is.

length($list) Return the length of a list. This can return the number of pairs in a map as