CSS

CSS is an acronym for Cascade Syle Sheet often used along side with HTML.

CSS is a style language that defines layout of HTML documents. For example, CSS covers fonts, colours, margins, lines, height, width, background images, advanced positions and many other things. Just wait and see! HTML can be (mis-)used to add layout to websites.

CSS was a revolution in the world of web design.

The  benefits of CSS include:

control layout of many documents from one single style sheet;

more precise control of layout;

apply different layout to different media-types (screen, print, etc.);

numerous advanced and sophisticated techniques.