--- relative-fields ---
// Test relative length fields.
#test((100% + 2em + 2pt).ratio, 100%)
#test((100% + 2em + 2pt).length, 2em + 2pt)
#test((100% + 2pt).length, 2pt)
#test((100% + 2pt - 2pt).length, 0pt)
#test((56% + 2pt - 56%).ratio, 0%)