本书共分3 部分，集中讨论了HTML5 和CSS3 规范及其技术的使用方法。首先是规范概述，介绍
了新的结构化标签、表单域及其功能（包括自动聚焦功能和占位文本）和CSS3 的新选择器。接下来是
HTML 对视频和音频的支持，讲述了画布上的图形绘制及CSS 阴影、渐变和变换的使用方法。最后介绍
使用HTML5 的客户端特性（包括Web Storage、Web SQL Databases 以及离线支持）建立客户端应用，使
用HTML5 实现跨域消息和数据传送，以及操作浏览器历史等的方法。
本书适合所有使用HTML 和CSS 的Web 开发人员学习参考。(The book is divided into 3 parts, focusing on the use of HTML5 and CSS3 specification and technology. First of all, the outline of the specification is introduced.
New structured tags, form fields and their functions, including auto focus function and placeholder text, and new selectors of CSS3. Next is
HTML's support for video and audio is about how to draw graphics on the canvas and how to use CSS shadow, gradation and transformation. The final introduction
Use HTML5's client features, including Web Storage, Web SQL Databases and offline support, to build client applications.
We use HTML5 to implement cross domain messaging and data transmission, and operate browser history.
This book is suitable for all Web developers who use HTML and CSS to learn references.)