selector_append($selectors...) Return a new selector with all selectors in $selectors appended one another as

unquote($string) Removes quotes from a string. If the string is already unquoted, this will return it unmodified.

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

@at-root The @at-root directive causes one or more rules to be emitted at the root of the document, rather than being

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

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

transparentize($color, $amount) Also known as: fade_out Makes

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

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

Pattern: element1 ~ element2   Definition: The element1 ~ element2 selector