diff --git a/Userland/Libraries/LibWeb/CSS/Identifiers.json b/Userland/Libraries/LibWeb/CSS/Identifiers.json
index fc6410f247..391f503623 100644
--- a/Userland/Libraries/LibWeb/CSS/Identifiers.json
+++ b/Userland/Libraries/LibWeb/CSS/Identifiers.json
@@ -75,7 +75,6 @@
   "center",
   "circle",
   "clip",
-  "coarse",
   "col-resize",
   "collapse",
   "column",
@@ -90,7 +89,6 @@
   "crosshair",
   "currentcolor",
   "cursive",
-  "dark",
   "dashed",
   "decimal",
   "decimal-leading-zero",
@@ -101,8 +99,6 @@
   "e-resize",
   "ew-resize",
   "fantasy",
-  "fast",
-  "fine",
   "fixed",
   "flex",
   "flex-start",
@@ -118,22 +114,17 @@
   "groove",
   "help",
   "hidden",
-  "hover",
-  "infinite",
   "inline",
   "inline-block",
   "inline-table",
   "inset",
   "inside",
-  "interlace",
   "invert",
   "italic",
   "justify",
-  "landscape",
   "large",
   "larger",
   "left",
-  "light",
   "lighter",
   "line-through",
   "list-item",
@@ -163,17 +154,12 @@
   "outset",
   "outside",
   "overline",
-  "p3",
   "padding-box",
-  "paged",
   "pointer",
-  "portrait",
   "pre",
   "pre-line",
   "pre-wrap",
   "progress",
-  "progressive",
-  "rec2020",
   "relative",
   "repeat",
   "repeat-x",
@@ -196,8 +182,6 @@
   "se-resize",
   "separate",
   "serif",
-  "srgb",
-  "slow",
   "small",
   "small-caps",
   "smaller",