For the majority of the book, we’ll focus on the HTML5 and CSS3 specifications themselves and how you can use the techniques they describe. In the last part of the book, we’ll look into a suite of closely related specifications that were once part of HTML5 but are in use right now on multiple platforms. These include Web SQL Databases, Geolocation,
and Web Sockets. Although these things aren’t technically HTML5, they can help you build incredible things when combined with HTML5 and CSS3.