# Resize

The `Resize` event is sent to a widget when its size changes and when it is first made visible.

- [x] Bubbles

## Parameters

`event.size`

: The new size of the Widget.

`event.virtual_size`

: The virtual size (scrollable area) of the Widget.

`event.container_size`

: The size of the widget's container.

## Code

::: textual.events.Mount