1 files changed, 12 insertions, 0 deletions
diff --git a/dom/webidl/CSSLayerBlockRule.webidl b/dom/webidl/CSSLayerBlockRule.webidl
new file mode 100644
index 0000000000..89b2828a6b
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+++ b/dom/webidl/CSSLayerBlockRule.webidl
@@ -0,0 +1,12 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://drafts.csswg.org/css-cascade-5/#the-csslayerblockrule-interface
+ */
+[Exposed=Window]
+interface CSSLayerBlockRule : CSSGroupingRule {
+  readonly attribute UTF8String name;
+};