Navigation & Interaction The foundations of good UX design lie in transparent navigation and interaction patterns and systems. A solid understanding of the rules is as important as knowing when to break them. How should you set up menus for optimal usability? Does mobile UX design follow different rules? How can you use sound to make your website not just more appealing but also easier to navigate? Such questions should be factored into any decisions considering modern Web design since they tend to influence the level of user satisfaction.