Short answers, pulled from the story.
Giotto's most celebrated work is the fresco cycle decorating the interior of the Scrovegni Chapel in Padua, completed around 1305. It is regarded as one of the supreme masterpieces of the Early Renaissance and was declared a UNESCO World Heritage site in 2021.
Giotto di Bondone was born around 1267 and died on the 8th of January, 1337. He worked during the Gothic and Proto-Renaissance period in Italy.
In 1334, the Commune of Florence appointed Giotto chief architect to the Cathedral and he designed its bell tower, known as Giotto's Campanile. Construction began on the 18th of July, 1334, and the tower was completed in 1359 by Andrea Pisano and Francesco Talenti, not entirely to Giotto's original design.
The attribution of the St. Francis Cycle in the Upper Church at Assisi to Giotto is now widely doubted. Technical examinations in 2002 provided strong evidence that Giotto did not paint that cycle, and it is generally accepted that four different hands, coming from Rome, are identifiable in those frescoes.
Unlike his contemporaries Cimabue and Duccio, Giotto rejected the Byzantine tradition of stylized, elongated figures in formalized drapery. His figures are solidly three-dimensional, clothed in naturally hanging garments, and show faces and gestures based on close observation of real people. He also used foreshortening and forced perspective to create the illusion of space.
The Ognissanti Madonna is displayed in the Uffizi in Florence, where it hangs beside Cimabue's Santa Trinita Madonna and Duccio's Rucellai Madonna. It is the only panel painting by Giotto accepted universally by scholars and measures 325 by 204 centimeters.