Lightning Design System

The Lightning Design System (LDS) is a set of pre-made styles, components, and guidelines created by Salesforce to ensure consistent and professional visual design in web applications and interfaces. It provides developers and designers with ready-to-use building blocks like buttons, forms, and layouts, enabling faster development and cohesive user experiences across Salesforce's products. Think of it as a style library that helps maintain a unified look and feel, much like a branded toolkit, so that applications look polished, function smoothly, and adhere to best design practices.