UI Components / Snackbar
In your Backendless App, go to the Marketplace -> User Interface tab and install the Snackbar componentInstall the component to the UI Container of your choice

Snackbar

Snackbar is a component for Backendless UI-Builder that
provides brief notifications and informs users of a process that
an app has performed or will perform.

Customizations include the Close and Action buttons settings,
autohide settings, component position and type.

UI Components / Snackbar