Single iframe
A form lives inside one iframe — you must switch context before you can interact with it.
The form below lives inside a single iframe. You must switch context into the frame before you can locate or interact with the input and button.
Framework notes
- selenium — Requires `driver.switchTo().frame(...)` before locating inner elements, then `switchTo().defaultContent()` after.
- playwright — `page.frameLocator(...)` handles this without an explicit switch/return.