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

lighten($color, $amount) Makes a color lighter. Takes a color and a number between 0% and 100%

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

if($condition, $if-true, $if-false) Returns one of two values, depending on whether or not $condition is true

percentage($number) Converts a unitless number to a percentage.

@each The @each directive usually has the form @each $var in <list or map>. $var

call($name, $args...) Dynamically calls a function. This can call user-defined functions, built-in functions, or plain CSS

Placeholder Selectors: %foo Sass supports a special type of selector called a “placeholder selector”. These look like class and

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

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