What does CSS stand for in web development?

CSS stands for Cascading Style Sheets. This term is crucial in web development as it describes a stylesheet language used to define the presentation and layout of web pages, including aspects like colors, fonts, spacing, and positioning of elements on the page.

The word "cascading" refers to the way styles can cascade or inherit properties from other styles, enabling developers to create a structured and manageable approach to styling a website. By using CSS, web developers can separate content from design, which facilitates easier maintenance and flexibility in making design updates or changes independent of the HTML content. This separation is essential for creating responsive and visually appealing web applications that can adapt to various devices and screen sizes.