CSS Cascading Style Sheets
CSS stands for Cascading Style Sheets.
CSS is a language that describes the style of an HTML document.
CSS describes how HTML elements are to be displayed.
CSS saves a lot of work. It can control the layout of multiple web pages all at once.
External style sheets are stored in CSS files.
CSS is used to define styles for your web pages, including the design, layout and variations in display for different devices and screen sizes.