The basics of designing the client side of Web applications are given, in particular, the basics of Web design, creating HTML documents, technology of cascading style sheets, j & # 097; vascript.Designed for students of higher educational institutions studying in specialties "Comprehensive information security of automated systems," "Information security of automated systems," "Information Systems and Technologies," "Computer-Aided Design Systems" of "Information Systems" training areas, "Information Systems and Technologies," "System Analysis and Management," "Informatics and Computer Engineering" and special software - "Software of computer equipment and automated systems."