Toasts
Toasts are compact transient notifications that can appear without moving the main page content.
Core concept
Explain toast markup, header/body, close behavior, autohide, delay, placement containers, and JavaScript initialization.
Using it in a real interface
Use a saved-success toast and an error toast that requires user attention. Explain why important failures may need a persistent alert instead of an automatically disappearing toast.
Implementation notes
Accessible live-region behavior matters because users who cannot see the toast may otherwise miss the message. Keep notification text concise and actionable.