smootify-box-category
A box category: its add-to-cart forms fill that category, the box moves to the next one. 2.0: is-complete while the box holds a piece of it, also on the slide or the `[role="tab"]` that shows it (generic build: the [slider-track] > * slide or the [role="tab"]; when every category there has one).
smootify-box-category is a template, read by smootify-magic-box: it is never defined on its own.
Where it can go
- Inside
smootify-magic-box. - Out of place, it stays in the page and does nothing.
What it requires
Nothing beyond Smootify: it works on every plan.
Attributes on the element
- It reads
data-name. - Smootify writes
is-completeon it: do not set them yourself.