| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <style> | |
| body { | |
| margin: 0; | |
| padding: 0; | |
| } | |
| iframe { | |
| border: none; | |
| background-color: green; | |
| width: 100vw; | |
| height: 100vh; | |
| box-sizing: border-box; | |
| display: block; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <iframe srcdoc="<button onclick='document.documentElement.requestFullscreen();'>Go fullscreen</button><p>This test passes if background is fully green with no red.</p>"></iframe> | |
| </body> | |
| </html> |