There was huge change in art over the period of modernism, modernist artist were concerned with representing modern life in the big cities of the time, hanse all the street scenes and interiors of cafes and theatres and so on. Post modernism art was always closely related to the human form and nature, as these were traditional of the time.
Modernism began to change the way artist were thinking, painting became more abstract and filled with color to provoke emotion, and an example of this change would be Piet Mandarin. He felt that using recognizable form in art takes away the essence of the painting, he believes you only need to concentrate on lines and color to create a feeling in works of art.
Mondrian reduces objects to their most basic form, you can see how he uses brush strokes themselves to form horizontal rectangles and lines to form the image, and the image is very geometric and futuristic.
Another example of modernist thinking is Russian painter Wassily Kandinsky, in his Composition V11 painted in 1913. His work is all about composition of the objects and the way they work together to form an image, color plays a vital part in Kandinsky’s work they are very loud, with is very expressive. He believes "color lines and shapes could exist autonomously in a painting without any connection to recognizable object, this way of thinking is very similar to the way Piet mandarin works.
Eventually Art grew out of nature. Nature became more of an inspiration method for painting and not the subject it self. Modernist believed that technology was the way forward, and would shape the future, Laszlo Moholy-Nagy says: to be a user of machines is to be of the spirit of this century. It has replaced the transcendental spiritualism of past eras. Before the machines, everyone is equal- I can use it so can you, there is no tradition in technology, no consciousness of class or standing".