CSS

A psychological principle which predicts that when multiple homogeneous stimuli are presented, the stimulus which differs from the rest is most likely to be remembered. In other words, people tend to remember items in isolation more than those of a similar nature or objects in clusters. This phenomenon has been applied in designing websites and software with various levels of success.

A philosophy that companies should take a user-centred approach to design, making sure they focus on the customer's needs and not on their company's needs. UX designers need to figure out what users want before building something and not after. They must also ask themselves if including "features" will provide any value to the product or service.

An imaginary line on which most letters "sit". As such, it equals the height of an em square. The expected result of a baseline is to reference the height with which text is aligned. The alignment ranges from ascenders, which are the upper strokes in b, d, and h, down to descenders like j or y.

The area of negative space around and between elements in a design.

When you need to break a line of text and start on a new line in a text box.

The written information that accompanies a design.

One or more words (typically at the end of a paragraph) that are separated from the rest of the text. Orphans are generally thought of as bad design, but it’s a matter of taste.

Also called a paragraph mark, a paragraph sign or section marker, is a typographical character for separating paragraphs. It looks like a "¶".

The primary graphic that appears at the top of a webpage, designed to grab people's attention.

The way that a user navigates through a website, app, etc.