# Sandbox.UI.Isolation

Possible values for the "isolation" CSS rule, dictating whether an element creates a new stacking context.

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

## Fields

- [`Auto`](/api/Sandbox.UI.Isolation/Auto): A new stacking context is created only if one of the other properties that trigger the creation of a stacking context is present (eg. a non-zero z-index, a filter, a mask, etc).
- [`Isolate`](/api/Sandbox.UI.Isolation/Isolate): Forces the creation of a new stacking context, even if none of the other stacking-context-triggering properties are present.