Answer:
Byzantine architects were eclectic, at first drawing heavily on Roman temple features. ... Byzantine structures featured soaring spaces and sumptuous decoration: marble columns and inlay, mosaics on the vaults, inlaid-stone pavements, and sometimes gold coffered ceilings.
A characteristic feature of Roman design was the combined use of arcuated and trabeated construction (employing arches and constructed with post and lintel). Although at first tentatively employed in the spaces between the classical columns, the arch eventually came to be the chief structural element.
