---
id: fast-foundation.anchoredregion.verticalviewportlock
title: AnchoredRegion.verticalViewportLock property
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [AnchoredRegion](./fast-foundation.anchoredregion.md) &gt; [verticalViewportLock](./fast-foundation.anchoredregion.verticalviewportlock.md)

## AnchoredRegion.verticalViewportLock property

Whether the region remains in the viewport (ie. detaches from the anchor) on the vertical axis

<b>Signature:</b>

```typescript
verticalViewportLock: boolean;
```

## Remarks

HTML Attribute: vertical-viewport-lock
