The start of every element ends with _wrap_ and each item inside ends with the value of that component. Composed of 3 parts: type, var, and element name. Child components are only 1 layer deep and never more than 3 underscores.

Global component classes that are consistent across all pages on your site.

Utility classes don't show a relationship between parent's and children. They are stacked on top of component classes.

Combo classes are created on top of another class and only effecting a specific class.