(This book is a classic design guide for beginners and intermediate readers. The book consists of eight chapters. The first four chapters respectively introduce HTML tags and document structure, CSS working principle, positioning elements, fonts and text, and explain in detail the basic concepts such as rules, declarations, cascading, specificity and selectors The next four chapters introduce the visual design technologies such as page layout, interface components, CSS3 rounded corners, shadows, gradients and multi backgrounds.This book is suitable for CSS beginners and intermediate readers.)