Cascading Style Sheets bring the same style-setting convenience to the Web that you have in most word processors. You can set the CSS in one central location to affect the appearance of specific HTML tags, on a single Web page, or across an entire Web site. Although CSS works with HTML, it is not HTML. Rather, CSS is a separate stylesheet language that enhances the abilities of HTML (a mark-up language) by allowing you to redefine the way that existing tags display their content. For example, the level 1 header tag container, allows you to apply styles to a section of HTML text and turn it into a header. But the exact display of the header is determined by the viewer’s browser, not by the HTML code. Using CSS, you can change the nature of the header tag so that it will be displayed how you want it to look—for example, bold, Times font, italic, red and 14 points A. As with word processor styles, you could choose to change the styling of the tag (for example, change the text size to 18pt) which would automatically change the text size of all h1 elements on the affected Web page.