Layouts refer to the arrangement of visual elements on a page or screen. They are essential in design, helping to organize content in a way that is easy to read and visually appealing. Common types of layouts include grid layouts, single-column layouts, and multi-column layouts, each serving different purposes depending on the content and audience. In web design, layouts are crucial for user experience. A well-structured layout guides users through information, making navigation intuitive. Tools like CSS (Cascading Style Sheets) are often used to create responsive layouts that adapt to various devices, ensuring that content is accessible on both desktops and mobile devices.