diff --git a/packages/block-editor/src/components/iframe/index.js b/packages/block-editor/src/components/iframe/index.js
index c6639f9e057e1c..a61200b4b1f1ca 100644
--- a/packages/block-editor/src/components/iframe/index.js
+++ b/packages/block-editor/src/components/iframe/index.js
@@ -260,15 +260,18 @@ function Iframe( {
 				style={ {
 					...props.style,
 					height: expand ? contentHeight : props.style?.height,
-					marginTop: scale
-						? -marginFromScaling + frameSize
-						: props.style?.marginTop,
-					marginBottom: scale
-						? -marginFromScaling + frameSize
-						: props.style?.marginBottom,
-					transform: scale
-						? `scale( ${ scale } )`
-						: props.style?.transform,
+					marginTop:
+						scale !== 1
+							? -marginFromScaling + frameSize
+							: props.style?.marginTop,
+					marginBottom:
+						scale !== 1
+							? -marginFromScaling + frameSize
+							: props.style?.marginBottom,
+					transform:
+						scale !== 1
+							? `scale( ${ scale } )`
+							: props.style?.transform,
 					transition: 'all .3s',
 				} }
 				ref={ useMergeRefs( [ ref, setRef ] ) }
diff --git a/packages/block-editor/src/components/use-resize-canvas/index.js b/packages/block-editor/src/components/use-resize-canvas/index.js
index d329e20d6106e4..fab0b7a15e2afd 100644
--- a/packages/block-editor/src/components/use-resize-canvas/index.js
+++ b/packages/block-editor/src/components/use-resize-canvas/index.js
@@ -47,12 +47,20 @@ export default function useResizeCanvas( deviceType ) {
 
 	const contentInlineStyles = ( device ) => {
 		const height = device === 'Mobile' ? '768px' : '1024px';
+		const marginVertical = marginValue() + 'px';
+		const marginHorizontal = 'auto';
+
 		switch ( device ) {
 			case 'Tablet':
 			case 'Mobile':
 				return {
 					width: getCanvasWidth( device ),
-					margin: marginValue() + 'px auto',
+					// Keeping margin styles separate to avoid warnings
+					// when those props get overridden in the iframe component
+					marginTop: marginVertical,
+					marginBottom: marginVertical,
+					marginLeft: marginHorizontal,
+					marginRight: marginHorizontal,
 					height,
 					borderRadius: '2px 2px 2px 2px',
 					border: '1px solid #ddd',