Note that this is not supported in any browser, and Chrome support was first implemented and then removed over two years ago, so it seems unlikely to ever be su

Note that this is not supported in any browser, and Chrome support was first implemented and then removed over two years ago, so it seems unlikely to ever be supported. Also a seamless iframe is not CSS-isolated, something that the GP said they wanted. http://caniuse.com/#feat=iframe-seamless http://caniuse.com/#feat=iframe-seamless