| QUIRKS mode. |
| |
| 1. 'alt' attribute is not set (image box should not collapse): |
| 20px 20px |
| |
| 2. 'alt' attribute is set to a non-empty value (image box should not collapse): |
| 20px 20px 20px 20px |
| |
| 3. 'alt' attribute is set to empty value (image box should collapse): |
| 0px 0px |
| |
| 4. 'alt' attribute is set to empty value but other attributes/properties prevent collapsing (image box should not collapse): |
| image box is blockified: 20px 20px |
| width attribute is set: 20px 20px |
| height attribute is set: 20px 20px |
| width and height attributes are set: 20px 20px |
| inline style with width set: 20px 20px |
| inline style with height set: 20px 20px |
| inline style with width and height: 20px 20px |
| |
