| Change class affecting ::backdrop style | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS getComputedStyle(dialog, '::backdrop').backgroundColor is not green | |
| PASS internals.updateStyleAndReturnAffectedElementCount() is 2 | |
| PASS getComputedStyle(dialog, '::backdrop').backgroundColor is green | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |