diff --git a/beta/src/components/MDX/Sandpack/Preview.tsx b/beta/src/components/MDX/Sandpack/Preview.tsx
index c77d8f30..d0836c9c 100644
--- a/beta/src/components/MDX/Sandpack/Preview.tsx
+++ b/beta/src/components/MDX/Sandpack/Preview.tsx
@@ -6,10 +6,8 @@
 import * as React from 'react';
 import {useSandpack, LoadingOverlay} from '@codesandbox/sandpack-react';
 import cn from 'classnames';
-
 import {Error} from './Error';
-import {computeViewportSize} from './computeViewportSize';
-import type {LintDiagnostic} from './useSandpackLint';
+import type {LintDiagnostic} from './utils';
 
 const generateRandomId = (): string =>
   Math.floor(Math.random() * 10000).toString();
@@ -119,7 +117,6 @@ export function Preview({
     [status === 'idle']
   );
 
-  const viewportStyle = computeViewportSize('auto', 'portrait');
   const overrideStyle = error
     ? {
         // Don't collapse errors
@@ -149,7 +146,6 @@ export function Preview({
       style={{
         // TODO: clean up this mess.
         ...customStyle,
-        ...viewportStyle,
         ...overrideStyle,
       }}>
       <div
diff --git a/beta/src/components/MDX/Sandpack/computeViewportSize.ts b/beta/src/components/MDX/Sandpack/computeViewportSize.ts
deleted file mode 100644
index 81007d1b..00000000
--- a/beta/src/components/MDX/Sandpack/computeViewportSize.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (c) Facebook, Inc. and its affiliates.
- */
-
-export type ViewportSizePreset =
-  | 'iPhone X'
-  | 'Pixel 2'
-  | 'iPad'
-  | 'Moto G4'
-  | 'Surface Duo';
-
-export type ViewportSize =
-  | ViewportSizePreset
-  | 'auto'
-  | {width: number; height: number};
-
-export type ViewportOrientation = 'portrait' | 'landscape';
-
-const VIEWPORT_SIZE_PRESET_MAP: Record<
-  ViewportSizePreset,
-  {x: number; y: number}
-> = {
-  'iPhone X': {x: 375, y: 812},
-  iPad: {x: 768, y: 1024},
-  'Pixel 2': {x: 411, y: 731},
-  'Moto G4': {x: 360, y: 640},
-  'Surface Duo': {x: 540, y: 720},
-};
-
-export const computeViewportSize = (
-  viewport: ViewportSize,
-  orientation: ViewportOrientation
-): {width?: number; height?: number} => {
-  if (viewport === 'auto') {
-    return {};
-  }
-
-  if (typeof viewport === 'string') {
-    const {x, y} = VIEWPORT_SIZE_PRESET_MAP[viewport];
-    return orientation === 'portrait'
-      ? {width: x, height: y}
-      : {width: y, height: x};
-  }
-
-  return viewport;
-};