| PASS Default gap is 'normal' | |
| PASS gap accepts pixels | |
| PASS gap accepts pixels 2 | |
| PASS gap accepts pixels combined with percentage | |
| PASS gap accepts em | |
| PASS gap accepts em 2 | |
| PASS gap accepts vw | |
| PASS gap accepts vw and vh | |
| PASS gap accepts percentage | |
| PASS gap accepts percentage 2 | |
| PASS gap accepts calc() | |
| PASS gap accepts calc() mixing fixed and percentage values | |
| PASS gap accepts calc() 2 | |
| PASS Initial gap is 'normal' | |
| PASS Initial gap is 'normal' 2 | |
| PASS Initial inherited gap is 'normal' | |
| PASS gap is inheritable | |
| PASS Negative gap is invalid | |
| PASS 'max-content' gap is invalid | |
| PASS 'none' gap is invalid | |
| PASS Angle gap is invalid | |
| PASS Resolution gap is invalid | |
| PASS Time gap is invalid | |
| PASS gap with three values is invalid | |
| PASS gap with slash is invalid | |
| PASS gap with one wrong value is invalid | |