The document discusses Gestalt theory and its application to website interface design. It provides an overview of Gestalt theory, outlining 10 laws of Gestalt including similarity, proximity, closure, and simplicity. The document then explains each law and provides an example of how it can be applied to website interface design, such as using similar buttons to group related functions or placing closely spaced buttons to indicate they serve the same purpose. The goal is to help designers create intuitive interfaces that allow users to understand how to use the site without instructions.