Aesthetics

Aesthetics can be defined as a branch of philosophy, a species of value theory or axiology, which is the study of sensory or sensori-emotional values, sometimes called judgments of sentiment and taste. Aesthetics is closely associated with the philosophy of art.
Again aesthetics are subject to opinion but some aesthetics can be universal such as the the opinion that a kitten is considered cute, or maggots are considered to be repulsive.
Websites can also have aesthetic function.