Functions allow you to define complex operations on SassScript values that you can re-use throughout your stylesheet. They make it easy to abstract out common formulas and behaviors in a readable way.

• To include logic for styling - similar to JS functions
• Should be used to compute & return values

Example

@function functionName($argument) {
  @return $argument
}

• https://codepen.io/seanho96/pen/OJpWEXq