        <svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%">
            <foreignObject width="100%" height="100%">
                <iframe xmlns="http://www.w3.org/1999/xhtml" 
                        style="border:none; width:100vw; height:100vh;" 
                        src="data:text/html;base64,${encodedIframe}">
                </iframe>
            </foreignObject>
        </svg>