
Piet Mondrian, a Dutch painter who loved simple straight lines and just a few pure colors.
A neat grid of black lines makes boxes, and some boxes are filled with red, blue, and yellow.
Mondrian painted this tidy design in 1930, trying to find the most simple, perfect balance.
He used only straight lines and the three basic colors plus white, black, and gray.
Notice how the boxes are all different sizes, yet the whole picture still feels calm and even.
You can see it at the Kunsthaus museum in Zurich, Switzerland.
Mondrian's simple grids later inspired dresses, buildings, and even packages you might see today.