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

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

@for The @for directive repeatedly outputs a set of styles. For each repetition, a counter variable is used to adjust

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

invert($color) Returns the inverse (negative) of a color. The red, green, and blue values are inverted, while the opacity

@extend There are often cases when designing a page when one class should have all the styles of another class, as well as its

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

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

selector_extend($selector, $extendee, $extender) Returns a new version of $selector with $extendee

@warn The @warn directive prints the value of a SassScript expression to the standard error output stream. It’s useful