| <html> | |
| <body> | |
| <div id="box" style='border: 1px solid #000; height: 1000px;'>1000-pixel box</div> | |
| <iframe id="iframe" src="data:text/html,<body><div style='border: 1px solid #000; height: 5000px;'>5000-pixel box</div><button id='button'>Test Button</button></button></body>"></iframe> | |
| </body> | |
| </html> |