1 files changed, 0 insertions, 2 deletions
diff --git a/testing/web-platform/tests/css/css-cascade/all-prop-revert-layer.html b/testing/web-platform/tests/css/css-cascade/all-prop-revert-layer.html
index 868267b285..3a1d621d17 100644
--- a/testing/web-platform/tests/css/css-cascade/all-prop-revert-layer.html
+++ b/testing/web-platform/tests/css/css-cascade/all-prop-revert-layer.html
@@ -15,8 +15,6 @@
   alt: "a";
   animation-composition: add;
   animation-delay: 123s;
-  animation-delay-start: 123s;
-  animation-delay-end: 456s;
   animation-direction: reverse;
   animation-duration: 123s;
   animation-fill-mode: both;