Muslim architecture incorporated Roman and Byzantine elements because Muslims valued Roman and Bizantine architectural styles the most.
After the conquering of Constantinople by Mehemed, from the Ottoman Empire in 1453, Muslims incorporated the Islamic elements into the Byzantine structures. They were impressed by the fine details in Christian mosaics and some of the Muslims edifications had Christian influences.
One of the differences of the Islamic use of mosaics in art is that they were created with few human figures.