De Stijl, translated as "the style" was very innovative in its approach. Moving apart from colourful compositions of Kandisky, De Stijl came to be much more structured and simpler. The use of curved lines was rejected, so as the shapes of circles or any other shapes apart from squares and rectangles. To add, De Stijl promoted the use of primary colours only - bright yellow, vibrant red and saturated blue followed and placed in between black and white shapes. The use of thick black lines was likewise essential, so as the absence of non-straight and non-right angles.
References:
Anon . (n.d.). De Stijl . Available: http://www.theartstory.org/movement-de-stijl.htm. Last accessed 2nd Jan 2015 .
Henkels, H. (2009). de Stijl. Available: http://www.moma.org/collection/theme.php?theme_id=10199. Last accessed 2nd Jan 2015.
Miller, J (2006). Decorative Arts . London: Dorling Kindersley Limited . p249 .
White, M (2003). De Stijl and Dutch Modernism. New York : Manchester University Press. p12-44.