Introduction to Cascading Style Sheets

Introduction to Cascading Style Sheets

Cascading Style Sheets (CSS) is a slightly misleading term, since a website might have only one CSS file (style sheet), or the CSS might be embedded within an HTML file. It is better to think of CSS as a technology (in the singular). CSS is comprised of statements that control the styling of HTML documents. Simply put, an HTML document should convey content. A CSS document should control the styling of that content.

<div align="center"></div> <img src="this.gif" border="0" alt="" /> <table height="200">... <td width="30"></td>

An HTML file points to one or more external style sheets (or in some cases a list of declarations embedded within the head of the HTML file) which then controls the style of the HTML document. These style declarations are called CSS rules.