pub const FIELD_CLASSES: &[&str];Expand description
Every class a field’s markup can carry.
crate::facet::FACET_CLASSES’ obligation. Every one of these is ruled by
the generated sheet, the group’s four through group_rules; the list is
written down anyway, because it is what the hosts’ markup is held against
and what the vocabulary test holds the sheet against.
What goes wrong without it: an app checking its stylesheet against
crate::vocabulary::names concludes that its live .form-group and
.form-label rules match nothing and are safe to delete.