Most mixins contain the same signature and come with sensible defaults. You can override anyone of them; some on a global level by overriding the configuration that is passed in, but the $className is unique to each mixin and defaults to the name of the property being used. For example if you're using animation-direction() mixin, then the default class name would be animation-direction.
Some mixins will have other parameters but for the most part they all contain these following:
| Name | Type | Description | Default |
|---|---|---|---|
$className |
String | a CSS class name that will be used | <property name> |
$breakpoints |
Map | a map of grid breakpoints | config.$breakpoints |