diff --git a/.changeset/weak-onions-tickle.md b/.changeset/weak-onions-tickle.md
new file mode 100644
index 000000000..893029fc5
--- /dev/null
+++ b/.changeset/weak-onions-tickle.md
@@ -0,0 +1,5 @@
+---
+"@gitbook/react-contentkit": patch
+---
+
+Fix an issue where iframe aspect ratio was not respected.
diff --git a/packages/react-contentkit/src/ElementWebframe.tsx b/packages/react-contentkit/src/ElementWebframe.tsx
index 93e26ecf4..fbbee7a85 100644
--- a/packages/react-contentkit/src/ElementWebframe.tsx
+++ b/packages/react-contentkit/src/ElementWebframe.tsx
@@ -176,15 +176,9 @@ export function ElementWebframe(props: ContentKitClientElementProps<ContentKitWe
             allow="clipboard-write"
             className="contentkit-webframe"
             style={{
-                // If given an aspect ratio, use width as auto dimension and let height take precedence.
-                ...(aspectRatio
-                    ? {
-                          width: 'auto',
-                          aspectRatio,
-                      }
-                    : { width: '100%' }),
-
+                width: '100%',
                 maxWidth: '100%',
+                aspectRatio,
                 height: size.height ? Math.max(size.height, 32) : '100%',
                 border: 'none',
             }}