Test HTML from Claude CLAUDE artifact1 html, body { height: 100%; margin: 0; } iframe { width: 100%; height: 100%; border: 0; } <iframe src="https://claude.ai/public/artifacts/d7575071-d972-41cd-aac4-5caa214d928c" title="claude artifact1" loading="lazy" referrerpolicy="no-referrer" >