Why was the Book of Ebbo so unique in its style compared to Ottonian manuscripts?

The Book of Ebbo uses a style associated with Reims with its use of frenetic intensity and expressively colored lines

The Book of Ebbo has a unique style that uses a style associated with Reims with its use of frenetic intensity and expressively colored lines.

Explanation:

The Book of Ebbo (also Ebbo Gospels) is a gospel book that was produced in the 9th century at the Benedictine Abbey Saint-Pierre d'Hautvillers. The book is remarkable because of the frenetic intensity that the drawings display. The vibrant emotions it exhibits are very different from those we find in Classical art. The figures in this book are extremely expressive, often showing nervousness and agitation. Moreover, the strokes are energetic and swift. The book influenced the style of art used in the Utrecht Psalter.