diff --git a/components/script/layout_dom/element.rs b/components/script/layout_dom/element.rs
index 7e9c1653dd1..bfafbe1b00b 100644
--- a/components/script/layout_dom/element.rs
+++ b/components/script/layout_dom/element.rs
@@ -459,6 +459,11 @@ impl<'dom, LayoutDataType: LayoutDataTrait> style::dom::TElement
     ) -> euclid::default::Size2D<Option<app_units::Au>> {
         todo!();
     }
+
+    fn anchors_relative_selector(&self) -> bool {
+        self.element
+            .has_selector_flags(ElementSelectorFlags::ANCHORS_RELATIVE_SELECTOR)
+    }
 }
 
 impl<'dom, LayoutDataType: LayoutDataTrait> ::selectors::Element