Skeuomorphism is a design technique used to create graphical user interfaces that emulate the look of familiar physical objects. Its purpose is to help users identify and understand interface elements at first glance. For instance, a beveled button may appear to protrude from the background, suggesting that it can be "pushed" by clicking on it.
Skeuomorphism was very popular when computers were first introduced to consumers, notably at Apple, Inc. under the leadership of Steve Jobs. However, as modern users have become more familiar with computers, GUI design has shifted from skeuomorphism to "flat design," which uses fewer beveled and photorealistic elements.