Rows & Columns follows Word: four big buttons carrying a 28px glyph and a
two-line label, with the three deletions folded into one Entfernen dropdown
beside them so the group keeps its width.
Two lines cost the band 12px (--w-ribbon-h 96 -> 108). The labels size to
min-content, not max-width, which a wrapped box ignores; and the inserts drop
the reserved caret slot, without which the group's foot label sits 8px below
every other group's.