Mannerism is notable for its intellectual sophistication as well as its artificial elements versus the Renaissance focus on naturalistic qualities.Mannerism showcases compositional tension & instability rather than the balance and clarity of earlier Renaissance painting.
Period from High Renaissance (1520) to Baroque (1590)
Name derived from the Italian "maniera" or "style" suggesting an artist's personal characteristic "touch" or recognizable "manner."
https://www.understandingrome.com/2012/02/11/the-vault-of-the-gesu/
https://www.italianways.com/the-vault-ceiling-in-the-church-of-the-gesu-in-rome/
1) The Entombment of Christ -Pontormo
2) Il Gesu Facade-Giacomo Della Porta