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the World Wide Web consortium has strongly recommended for several years now because it gives designers and programmers the highest degree of control over now web content is presented in a browser window. Much like a word processor or page-layout program’s style sheets, CSS foe the web enables you to set default formatting options so that all the text within a certain tag follows the design specifications of the mockup. CSS also enables you to set customized styles and positioning attributes that you can selectively apply to text images lists tables and other objects on a page.When you use CSS to control a site’s presentation, you can apply detailed settings to pretty much any page element, including the following. CSS is fairly easy to write and implement and if you read the text and follow along with the excises in this chapter, you’ll be up and running pages with CSS in no time. To make the task of learning about styling pages with CSS smoother, this chapter breaks CSS down into several digestible parts. First you’ll learn about CSS style syntax. Then you’ll discover the difference between inline, internal and external style sheets and how to link an external CSS to an HTML file. After that you learn the basics of creating custom styles, redefining default tag styles and using CSS to set several tag styles at once or link styles to Ids that you set in the HTML. You’ll find an overview of the eight different CSS style categories, which will help you find the attributes you need when you create your own style sheets. You can find a full listing of all the CSS style attributes in each of the eight CSS style categories in appendix A. the chapter ends with instruction on formatting with CSS and a helpful list of the best on-and offline CSS resources. In the late 1990s, cascading style sheets were developed as an enhancement to HTML so that styling information for an entire web site could be centralized into a single external document thereby reducing the amount of code required for styling in every page of a web page. Besides keeping HTML code less cluttered then it would be using the old tags for text formatting using CSS provides other benefits including the following. The declaration can contain a single style definition or a block of definitions separated by semicolons, and is listed between opening and closing curly braces. The declaration provides the details of the style, including what should be changed and to what degree, like the color of an element being changed to a particular blue. Although only three types of selectors exist, declarations can include an unlimited number of property value pairs style attributes from any of the eight different style categories. As you’ll quickly learn, after you set certain style attributes in the CSS for particular tags, only attributes that differ need to be specified for subsequent styles. For example, if you wanted you could make Georgia the default font for the entire site by setting that as a style attribute for the body. When set, all fonts would display in Georgia unless specified differently in subsequent style definitions.
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