This document provides an introduction to CSS (Cascading Style Sheets) for beginners. It discusses what CSS is, its role in styling websites, and some basic CSS concepts. CSS is the language used to set general styling rules that apply HTML tags throughout a website to keep styles consistent. The document also lists some common tasks that can be accomplished with CSS, such as changing colors, text styles, spacing, and adding background images. It provides an overview of using the Firebug inspector and CSS editors to test and add CSS rules to a website developed with WordPress.