| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| summary { display: none; } | |
| span { background-color: red; } | |
| </style> | |
| </head> | |
| <body onload="test()"> | |
| <div> | |
| <div> | |
| <details open> | |
| <div>Hello1</div> | |
| <span>Hello2</span> | |
| <span>Hello3</span> | |
| <summary></summary> | |
| </details> | |
| </div> | |
| </div> | |
| </body> | |
| </html> |