LibWeb: Parse the scroll-timeline-name CSS property

Author: https://github.com/Calme1709
Commit: e95f326f3d
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6912
Reviewed-by: https://github.com/AtkinsSJ ✅

Libraries/LibWeb/CSS/Parser/PropertyParsing.cpp

@@ -745,6 +745,8 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue const>> Parser::parse_css_value(Pr
         return parse_all_as(tokens, [this](auto& tokens) { return parse_translate_value(tokens); });
     case PropertyID::Scale:
         return parse_all_as(tokens, [this](auto& tokens) { return parse_scale_value(tokens); });
+    case PropertyID::ScrollTimelineName:
+        return parse_all_as(tokens, [this, property_id](auto& tokens) { return parse_simple_comma_separated_value_list(property_id, tokens); });
     case PropertyID::WhiteSpace:
         return parse_all_as(tokens, [this](auto& tokens) { return parse_white_space_shorthand(tokens); });
     case PropertyID::WhiteSpaceTrim:

Libraries/LibWeb/CSS/Properties.json

@@ -3440,6 +3440,19 @@
     "affects-layout": false,
     "affects-stacking-context": true
   },
+  "scroll-timeline-name": {
+    "affects-layout": false,
+    "animation-type": "none",
+    "inherited": false,
+    "initial": "none",
+    "valid-identifiers": [
+      "none"
+    ],
+    "valid-types": [
+      "dashed-ident"
+    ],
+    "multiplicity": "coordinating-list"
+  },
   "scrollbar-color": {
     "affects-layout": false,
     "animation-type": "by-computed-value",