# Using ContainerEffect Transitions

The Container Family of controls, including Overlay and all of its subclasses (Panel, Tooltip, Dialog, SimpleDialog), can implement built-in transition effects using the `effect` property and the ContainerEffect object. This example demonstrates the fade and slide transitions provided with Container.

Use the buttons below to show and hide Overlays, noting their transition treatments as they appear and disappear.

overlay1 (fade in):
overlay2 (slide in):
overlay3 (fade and slide):
Overlay #1 from Markup
This is a Overlay that was marked up in the document.
End of Overlay #1
Overlay #2 from Markup
This is a Overlay that was marked up in the document.
End of Overlay #2
Overlay #3 from Markup
This is a Overlay that was marked up in the document.
End of Overlay #3