WPT
wpt / css / css-box / animation / padding-interpolation.html
Spec: CSS Box Model ↗
Runs: Chrome 155.0.8043.0 (wpt@b89af32bc, 2026-09-05) | Firefox 157.0a1 (wpt@b89af32bc, 2026-09-05) | Safari 251 preview (wpt@b89af32bc, 2026-09-05) | Ladybird 1.0-ca509 (wpt@b89af32bc, 2026-09-05) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 144/144 | 144/144 | 144/144 | 144/144 | 108/144 | 108/144 |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| CSS Transitions: property <padding> from neutral to [20px] at (-0.3) should be [7px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from neutral to [20px] at (0) should be [10px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from neutral to [20px] at (0.3) should be [13px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from neutral to [20px] at (0.6) should be [16px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from neutral to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from neutral to [20px] at (1.5) should be [25px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from neutral to [20px] at (-0.3) should be [7px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from neutral to [20px] at (0) should be [10px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from neutral to [20px] at (0.3) should be [13px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from neutral to [20px] at (0.6) should be [16px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from neutral to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from neutral to [20px] at (1.5) should be [25px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from neutral to [20px] at (-0.3) should be [7px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from neutral to [20px] at (0) should be [10px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from neutral to [20px] at (0.3) should be [13px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from neutral to [20px] at (0.6) should be [16px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from neutral to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from neutral to [20px] at (1.5) should be [25px] | PASS | PASS | PASS | PASS | PASS | PASS |
| Web Animations: property <padding> from neutral to [20px] at (-0.3) should be [7px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from neutral to [20px] at (0) should be [10px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from neutral to [20px] at (0.3) should be [13px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from neutral to [20px] at (0.6) should be [16px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from neutral to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from neutral to [20px] at (1.5) should be [25px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| CSS Transitions: property <padding> from [initial] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [initial] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [initial] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [initial] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [initial] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [initial] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [initial] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [initial] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [initial] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [initial] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [initial] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [initial] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [initial] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [initial] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [initial] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [initial] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [initial] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [initial] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| Web Animations: property <padding> from [initial] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [initial] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [initial] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [initial] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [initial] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [initial] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| CSS Transitions: property <padding> from [inherit] to [20px] at (-0.3) should be [33px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [inherit] to [20px] at (0) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [inherit] to [20px] at (0.3) should be [27px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [inherit] to [20px] at (0.6) should be [24px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [inherit] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [inherit] to [20px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [inherit] to [20px] at (-0.3) should be [33px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [inherit] to [20px] at (0) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [inherit] to [20px] at (0.3) should be [27px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [inherit] to [20px] at (0.6) should be [24px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [inherit] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [inherit] to [20px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [inherit] to [20px] at (-0.3) should be [33px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [inherit] to [20px] at (0) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [inherit] to [20px] at (0.3) should be [27px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [inherit] to [20px] at (0.6) should be [24px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [inherit] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [inherit] to [20px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | PASS | PASS |
| Web Animations: property <padding> from [inherit] to [20px] at (-0.3) should be [33px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [inherit] to [20px] at (0) should be [30px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [inherit] to [20px] at (0.3) should be [27px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [inherit] to [20px] at (0.6) should be [24px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [inherit] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [inherit] to [20px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| CSS Transitions: property <padding> from [unset] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [unset] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [unset] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [unset] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [unset] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [unset] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [unset] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [unset] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [unset] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [unset] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [unset] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [unset] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [unset] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [unset] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [unset] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [unset] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [unset] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [unset] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | PASS | PASS |
| Web Animations: property <padding> from [unset] to [20px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [unset] to [20px] at (0) should be [0px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [unset] to [20px] at (0.3) should be [6px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [unset] to [20px] at (0.6) should be [12px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [unset] to [20px] at (1) should be [20px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [unset] to [20px] at (1.5) should be [30px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| CSS Transitions: property <padding> from [0px] to [10px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [0px] to [10px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [0px] to [10px] at (0.3) should be [3px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [0px] to [10px] at (0.6) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [0px] to [10px] at (1) should be [10px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [0px] to [10px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [0px] to [10px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [0px] to [10px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [0px] to [10px] at (0.3) should be [3px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [0px] to [10px] at (0.6) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [0px] to [10px] at (1) should be [10px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [0px] to [10px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [0px] to [10px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [0px] to [10px] at (0) should be [0px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [0px] to [10px] at (0.3) should be [3px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [0px] to [10px] at (0.6) should be [6px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [0px] to [10px] at (1) should be [10px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [0px] to [10px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | PASS | PASS |
| Web Animations: property <padding> from [0px] to [10px] at (-0.3) should be [0px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [0px] to [10px] at (0) should be [0px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [0px] to [10px] at (0.3) should be [3px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [0px] to [10px] at (0.6) should be [6px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [0px] to [10px] at (1) should be [10px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [0px] to [10px] at (1.5) should be [15px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| CSS Transitions: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (-0.3) should be [17px 37px 57px 77px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0) should be [20px 40px 60px 80px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.3) should be [23px 43px 63px 83px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.6) should be [26px 46px 66px 86px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1) should be [30px 50px 70px 90px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1.5) should be [35px 55px 75px 95px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (-0.3) should be [17px 37px 57px 77px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0) should be [20px 40px 60px 80px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.3) should be [23px 43px 63px 83px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.6) should be [26px 46px 66px 86px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1) should be [30px 50px 70px 90px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Transitions with transition: all: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1.5) should be [35px 55px 75px 95px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (-0.3) should be [17px 37px 57px 77px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0) should be [20px 40px 60px 80px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.3) should be [23px 43px 63px 83px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.6) should be [26px 46px 66px 86px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1) should be [30px 50px 70px 90px] | PASS | PASS | PASS | PASS | PASS | PASS |
| CSS Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1.5) should be [35px 55px 75px 95px] | PASS | PASS | PASS | PASS | PASS | PASS |
| Web Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (-0.3) should be [17px 37px 57px 77px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0) should be [20px 40px 60px 80px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.3) should be [23px 43px 63px 83px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (0.6) should be [26px 46px 66px 86px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1) should be [30px 50px 70px 90px] | PASS | PASS | PASS | PASS | FAIL | FAIL |
| Web Animations: property <padding> from [20px 40px 60px 80px] to [30px 50px 70px 90px] at (1.5) should be [35px 55px 75px 95px] | PASS | PASS | PASS | PASS | FAIL | FAIL |