diff --git a/src/lib/codemirror/mode/css/css.js b/src/lib/codemirror/mode/css/css.js
index b0721b4..b0cfa30 100644
--- a/src/lib/codemirror/mode/css/css.js
+++ b/src/lib/codemirror/mode/css/css.js
@@ -562,7 +562,7 @@ CodeMirror.defineMode("css", function(config, parserConfig) {
     "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin",
     "stroke-miterlimit", "stroke-opacity", "stroke-width", "text-rendering",
     "baseline-shift", "dominant-baseline", "glyph-orientation-horizontal",
-    "glyph-orientation-vertical", "text-anchor", "writing-mode",
+    "glyph-orientation-vertical", "text-anchor", "writing-mode","view-transition-name"
   ], propertyKeywords = keySet(propertyKeywords_);
 
   var nonStandardPropertyKeywords_ = [