diff --git a/components/style/values/specified/box.rs b/components/style/values/specified/box.rs
index 1b932648361..4b5092adfaf 100644
--- a/components/style/values/specified/box.rs
+++ b/components/style/values/specified/box.rs
@@ -1489,13 +1489,6 @@ pub enum Appearance {
     Range,
     #[parse(condition = "ParserContext::in_ua_or_chrome_sheet")]
     RangeThumb,
-    /// The resizer background area in a status bar for the resizer widget in
-    /// the corner of a window.
-    #[parse(condition = "ParserContext::in_ua_or_chrome_sheet")]
-    Resizerpanel,
-    /// The resizer itself.
-    #[parse(condition = "ParserContext::in_ua_or_chrome_sheet")]
-    Resizer,
     /// The scrollbar slider
     #[parse(condition = "ParserContext::in_ua_or_chrome_sheet")]
     ScrollbarHorizontal,
@@ -1546,9 +1539,6 @@ pub enum Appearance {
     /// A status bar in a main application window.
     #[parse(condition = "ParserContext::in_ua_or_chrome_sheet")]
     Statusbar,
-    /// A single pane of a status bar.
-    #[parse(condition = "ParserContext::in_ua_or_chrome_sheet")]
-    Statusbarpanel,
     /// A single tab in a tab widget.
     #[parse(condition = "ParserContext::in_ua_or_chrome_sheet")]
     Tab,