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The Web is an ever-changing, evolving entity, and it's easy for a designer to get left behind. As both a designer and writer, I see a lot of books on web design, and although many are well written, few are truly integrated, modular resources that any designer can find useful in his or her day-to-day work. Most web design books concentrate on a single technology (or, commonly, a piece of software), leaving the designer to figure out how to put the pieces together.