How does Ognissanti Madonna elucidate its Influences?
The 'Madonna Enthroned' shows the numerous styles of art that influenced Giotto. In both the gold coloring used throughout the artwork and the flat gold ground, Giotto's art continued the traditional Italo-Byzantine style so popular in the proto-Renaissance period.  The altarpiece represents a formalized representation of an icon, still retaining the stiffness of Byzantine art, and Giotto retained the hierarchy of scale, making the centralized Madonna and the Christ Child much larger in size than the surrounding saints and religious figures.Giotto's figures, however, escape the bounds of Byzantine art.  His figures are weighty and are reminiscent of three-dimensional sculptures, such as those in classical Roman sculpture.  The Madonna's intricately decorated throne, which itself is an Italian Gothic design, has a very specific use of colored marble as a surface decoration.  This method of decoration, based on a style called Cosmatesque or Cosmati, was popular in Rome since the Early Christian period and in Tuscany in the Late Middle Ages. 
There were, additionally, a number of specific artists whose styles heavily influenced the Ognissanti Madonna. The influence of Cimabue, traditionally recognized as Giotto's teacher (based on Giorgio Vasari's 16th century Lives of the Most Excellent Painters, Sculptors, and Architects), is shown first in the very symmetrical composition of the piece. Cimabue portrayed the same subject of symmetry in his 1280 'Virgin and Child Enthroned', and both pieces share aspects of the Italo-Byzantine style, with Cimabue's having more Byzantine attributes.  Additionally, the two depictions of the angels' wings in Giotto and Cimabue's pieces clearly resemble each other. Both pieces share a similar, initial feeling of severity, yet there is more to each piece than the drama. Giotto adopted from his teacher the importance of, and the concern for, volume and forms in space.  
The tranquility of Giotto's figures resembled also the style of Pietro Cavallini.  From this artist, who painted neo-Byzantine pieces, taking cues from both mosaics and frescos from Roman and Early Christian times, Giotto took important lessons in the technique of painting, and in rendering figures as statuesque and calm.Lastly, Giotto took cues from many contemporary sculptors, including Nicola and Giovanni Pisano, whose work shares influences of Northern Gothic art. In the work of these artists, Giotto saw great, dramatic compositions that would certainly influence his Ognissanti Madonna.
Giorgio Vasari proto-Renaissance Giovanni Pisano Cimabue Nicola Cosmatesque or Cosmati Christ Child Lives of the Most Excellent Painters, Sculptors, and Architects Renaissance Italo-Byzantine Giotto Ognissanti Cosmatesque Pietro Cavallini gold ground Gothic art