Pattern: :root   Definition: The :root pseudo-class matches an

grayscale($color) Converts a color to grayscale. This is identical to desaturate(color, 100%).

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.

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

Pattern: :first-of-type   Definition: The :first-

Pattern: :first-child   Definition: The :first-ch

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