| <!DOCTYPE html> | |
| <meta name="viewport" content="width=device-width"> | |
| <body style="width: 100vw; height: 100vh; margin: 0;" | |
| ondragenter="window.observedDragEnter = true; return false;" | |
| ondragover="window.observedDragOver = true; return false;" | |
| ondrop="window.observedDrop = true; return false;"> |