Composition in any visual art (such as design, painting or photography) is the purposeful placement or arrangement of visual elements-line, shape, texture, value and color. For webpages, these concepts apply to how everything is organized on a page. Many designers use a grid structure to help them position items on a page, and the same is true for web designers. Many web designers use a grid called the 960 pixel grid. Essentially, it is 960 pixels wide with 12 equal sized columns of 60 pixels each and 20 pixels between each column.