Previously on Design n' Stuff windows 8.1 mobile app UI design A user interface needs to be well structured and arranged in a attractive and non - distracting way. Especially because its the first impression which a user gets about your program or the application. Sometimes though your application is capable of many awesome stuff, users may not use it or like it, may be not very popular among the public, simply because its not appealing to them. So this is a small guide which will help you to design your user interface according to the standards and make your app attractive! Let's get started with the fundamentals of UI designing. UI Design Principles There are 5 basic principles of UI design which is also know as "SOLID" S - SRP or the Single Responsibility Principle O - OCP or the Open Close Principle L - LSP or the Liskov Substitution Principle I - ISP or the Interface segregation principle D - DIP or the Dependency ...