Variables: $ The most straightforward way to use SassScript is to use variables. Variables begin with dollar signs, and are set

rgba($red, $green, $blue, $alpha) rgba($color, $alpha)

@while The @while directive takes a SassScript expression and repeatedly outputs the nested styles until the statement

mix($color1, $color2, $weight:50%) Mixes two colors together. Specifically, takes the average of each of the RGB components

zip($lists...) Combines several lists into a single multidimensional list. The nth value of the resulting list is a space

green($color) Gets the green component of a color. Calculated from HSL where necessary via

adjust_color($color, [$red], [$green], [$blue], [$hue], [$saturation], [$lightness], [$alpha]) Increases or decreases one

unitless($number) Returns whether a number has units.

Pattern: :focus   Definition: The :focus pseudo-class

counters($args...) This function only exists as a workaround for IE7‘s