| <!DOCTYPE html> | |
| <html> | |
| <!-- There was a bug that styles are unexpectedly shared regardless of required status difference. --> | |
| <head> | |
| <style> | |
| :required:valid { | |
| color: red; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <input required value="required"> | |
| <input value="optional"> | |
| </body> | |
| </html> |