join($list1, $list2, $separator:auto) Joins together two lists into one. Unless $separator

feature_exists($feature) Returns whether a feature exists in the current Sass runtime. The

hsla($hue, $saturation, $lightness, $alpha) Creates a Color from hue, saturation, lightness

set Return a new list, based on the list provided, but with the nth element changed to the value given.

desaturate($color, $amount) Makes a color less saturated. Takes a color and a number between 0% and 100%, and returns a color

str_insert($string, $insert, $index) Inserts $insert into $string at $index.

rgb($red, $green, $blue) Creates a Color object from red, green, and blue values.

str_length($string) Returns the number of characters in a string.

saturation($color) Returns the saturation component of a color. See

selector_append($selectors...) Return a new selector with all selectors in $selectors appended one another as