.less
files)extend
feature to reuse styles across different selectors@import
.scss
and .sass
file formats@import
to split and organize SASS files@extend
@extend
for inheritance in SASS@if
, @else
, and @else if
to write conditional styles@for
, @each
, and @while
lighten
, darken
, fadein
, spin
, etc.)adjust-color
, scale-color
, etc.)