What is the correct syntax to define default values to mixin variables?

Question

Faisal Khan · Accepted Answer

@mixin mixin_name($variable: default_value, $variable: default_value) {properties: values/variables;}

Faisal Khan · Answer

@mixin mixin_name($variable=default_value, $variable=default_value) {properties: values/variables;}

Faisal Khan · Answer

@mixin mixin_name($variable-default_value, $variable-default_value) {properties: values/variables;}

Faisal Khan · Answer

All of the above

Question #148209