| <!DOCTYPE html> | |
| <style> | |
| #button::first-line { color: red; } | |
| #button.green::first-line { color: green; } | |
| </style> | |
| <button id="button"> | |
| <div> | |
| <p>This text should be green.</p> | |
| </div> | |
| </button> | |
| <script src="../../resources/run-after-layout-and-paint.js"></script> | |
| <script> | |
| runAfterLayoutAndPaint(function() { | |
| document.getElementById('button').className = 'green'; | |
| }, true); | |
| </script> |