Embed iframes were placed inside flex column layouts without shrink protection, so authored width/height attributes could be ignored when the preview panel was narrower than the iframe. Parse dimensions from pasted embed code and size a dedicated host wrapper so the iframe renders at the intended dimensions while still scaling down with max-width: 100%. Co-authored-by: Cursor Agent <[email protected]> Co-authored-by: Rotimi Best <[email protected]>