Cascading style sheets (CSS) free pdf tutorial

CSS (Cascading Style Sheet) are text documents, just like HTML. The difference is that a CSS is not intended either to be viewed by the user or to be displayed directly in the browser. A stylesheet is only a document that defines how an HTML page should be displayed. The web browser takes care of loading the CSS without the user having to intervene; A CSS is meant to act in the background.

Using styles, for example, it is possible to say that all the links, instead of being blue or purple as usual, must be gray; Or the text is still orange.

In fact, the idea is that the browser scans the HTML document. When it encounters a tag, it asks the CSS how it should display it. The CSS knows nothing more than to say how to display this or that item on the web page.

Table of contents

• Introduction
• Inline Styles
• Embedded style sheets
• Conflicting Styles
• Linking external Style Sheets
• W3C CSS Validation Service
• Positioning elements
• Backgrounds
• Element dimensions
• Text Flow and the Box Model
• User Style SheetsWeb Resources

We introduced the extensible Gypertext markup lamguage (XHTML) for markup up information.

In this we shift our focus to formatting and presenting information. To do this we use a W3C technology called Cascading Style Sheets (CSS) that allows document authors to specify the presentation of elements on a web page separately from the structure of the document.

This separation of structure from presentation simplifies maintaining and modifying a document's layout.