What is CSS?

CSS stands for Cacading style sheet and is designed to enable the separation of document content (written in HTML or a similar markup language) from document presentation (written in CSS).
The use of colour, fonts, layouts and other elements are used to enhance the presentation of a doucument. Without the use of CSS we are left without STYLE and CONTROL over the documents PRESENTATION. CSS style information can be either attached as a separate document or embedded in the HTML document. The use of style in a web page is made up of various codes...here is an example of how it works:
h1 { color: white; background: orange !important; }