There are two significant problems with this: 1. The output CSS contains invalid or unnecessary code. Multiple classes on an elements are incorrectly handled,

There are two significant problems with this: 1. The output CSS contains invalid or unnecessary code. Multiple classes on an elements are incorrectly handled, some form inputs (checkout and radio) are incorrectly referenced, and reference-only IDs are included. 2. The idea is flawed. Writing CSS and creating reusable components is not the same as filling in values for every element, class, and id found in your HTML.