Create dynamic, interactive websites with HTML5 and CSS3 HTML5 and CSS3 are the newest revisions of the primary standards for structuring and styling web content - major updates that enable designers and developers to streamline source code and publish more dynamic, interactive content without having to learn complex scripting languages.The Complete Idiot's Guide® to HTML5 and CSS3 provides both new and existing web developers the tools they need to code and design the web content that people increasingly expect to experience when they surf the web. Even better, you learn HTML5 and CSS3 in the context of building a website with a content management system (CMS), such as WordPress. You can then apply your knowledge of HTML5 and CSS3 to customize your site, instead of starting from scratch.