S5 is ‘A Simple Standards-Based Slide Show System’. It uses a single HTML file to create the content for Powerpoint-type slides, and CSS & Javascript to draw them. Not highly sophisticated, but very bandwidth-efficient, and all you need is a browser. Try looking at the sample slideshow and doing ‘View Source’.
Perhaps the nicest examples of what CSS formatting can do, though, are to be found at CSS Zen Garden, a whole host of web pages which all use the same HTML but are formatted with different CSS stylesheets to get very different looks.
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