What arranges parts of screens in logical order?

The arrangement of parts of screens in logical order is typically achieved through a user interface (UI) design framework or layout system. These frameworks utilize principles of design such as hierarchy, alignment, and grouping to create a coherent and intuitive flow of information. By following best practices in UI design, elements are organized to enhance usability and guide users through the content efficiently. Additionally, responsive design techniques ensure that the layout adapts to different screen sizes while maintaining logical order.