| PASS | Property mask-size value '1px' | |
| PASS | Property mask-size value '1px auto' | |
| PASS | Property mask-size value '2% 3%' | |
| PASS | Property mask-size value 'auto' | |
| PASS | Property mask-size value 'auto auto' | |
| PASS | Property mask-size value 'auto 4%' | |
| PASS | Property mask-size value 'contain' | |
| PASS | Property mask-size value 'cover' | |
| PASS | Property mask-size value 'calc(10px + 0.5em) calc(10px - 0.5em)' | |
| PASS | Property mask-size value 'calc(10px - 0.5em) calc(10px + 0.5em)' | |
| PASS | Property mask-size value 'auto 1px, 2% 3%, contain' | |
| PASS | Property mask-size value 'auto' multiple base values | |
| PASS | Property mask-size value 'auto, auto' multiple base values | |
| PASS | Property mask-size value 'auto, auto, auto' multiple base values | |
| PASS | Property mask-size value 'auto, 100%' multiple base values | |
| PASS | Property mask-size value '100%' multiple base values | |