# Sandbox.UI.BorderImageFill

State of `fill` setting of `border-image-slice` (`border-image`) CSS property.

- Kind: enum
- Namespace: `Sandbox.UI`
- Assembly: `Sandbox.System`
- Modifiers: sealed

## Fields

- [`Filled`](/api/Sandbox.UI.BorderImageFill/Filled): Do fill the middle of the container with the border's background image.
- [`Unfilled`](/api/Sandbox.UI.BorderImageFill/Unfilled): Do not fill the middle of the container with the border's background image.