React · SwiftUI · agent guides
Scroll area
A region that scrolls with the system's own scrollbar: a slim thumb that fades in while scrolling and widens when reached for, and edge fades that show there is more.
Use it for
- A list or text inside a fixed frame: a panel's rows, a long description in a popover, a sheet's content.
Don't use it for
- The page itself (let the window scroll), or content that fits (it shows nothing then anyway).